First Thanks to Roebeet for this update.
I am a newbie to this stuff and want to try and install 5.0.0 lite.
I am running 3588 double and triple checked, but want to confirm next steps so as to try and avoid semi brick.
I connected my G to laptop and created ROM folder and downloaded to there.
But can't seem to get file to extract to files update.zip and recovery. Then what is meant by unmount drive cleanly.
Thanks for putting up with such a newbie. I will get better with time I am sure.
Thanks,
Nathan
Did You Extract the Zip File from the RAR
Nathan:
I'm also a newbie so I'm probably overreading your question - but if you literally did what you wrote - then I would wonder if you extracted the recovery directory and update.zip files from the TNTLite 5.0 RAR file.
Roebeet packs his updates into RAR files so that for those of us who don't use ClockWorkMod (CWM) - we have the recovery directory and command file to use in updates. But the RAR file has to be unpacked/extracted to get to the recovery directory and update.zip file.
Since you didn't mention having done this after you moved the TNTLite 5.0 rom to your g tablet - I wonder if you've taken that step. If you haven't you either can unpack the RAR on your laptop/desktop and then move into the root of your g tablet SDCARD. Or you can use a program like UNRAR to unpack the TNTLite 5.0 RAR file directly on your g tablet.
Make sure you put the unpacked update.zip and recovery directory (if you don't use CWM) in the root of your SDCARD - not inside and other folder or directory like ROM-5. If the update.zip and recovery directory (if you don't used CWM) are not in the root of SDCARD, the g tablet will not find them when you use the power and volume + (up) to flash the update.
Hope this helps.
Thank you this is my problem. So, I tried to open on laptop and it just keeps coming up with open in a loop and no file. Not sure what I am doing wrong, is there a good place to find UNRAR program.
Thanks again
Got TNT lite 5.0 to install with no problems. One question though. I lost my angry birds and assume that is because I had to data wipe or does it come back when connected to the internet.
Thanks again.
rockdogg,
Did you complete a Titanium Backup before you started the upgrade to TnT Lite 5.0.0? If so, this is what I did:
The version of Angry Birds that is included with 3991/TnT Lite 5.0.0 rom is version 1.4.2. I had installed version 1.5.2 of Angry Bird prior to the upgrade, so I
1) Verified I still had the Titanium Backup for Angry Birds.
2) Removed the version of Angry Birds (1.4.2) installed with the rom.
3) Installed (restored) version 1.5.2 from backup (and selecting app+data)
If you want to use the 1.4.2 version that was installed with the rom, and just reinstall the data, then go to Titanium Backup (assuming you have a backup of the data), select Angry Birds from the backup/restore list as if you are going to restore it, and when prompted, select to restore the data only.
nervous
I just got my tab in today and I'm alittle gunshy about flashing 5.0 I have the stock vanilla version is it worth my effort to do this. ...thanks in advance
sigvader said:
I just got my tab in today and I'm alittle gunshy about flashing 5.0 I have the stock vanilla version is it worth my effort to do this. ...thanks in advance
Click to expand...
Click to collapse
When in doubt, don't do it. If it works, it works well - but you can semi-brick the device if you're not careful. It's a tricky path and I still think it's the reason why Viewsonic hasn't released this firmware yet.
Read the instructions and if you prepare for the worst (which is using nvflash to unbrick it), I think it's worth doing.
thanks alot for your response i am studying up now!!!!!!!
Roebeet, I love the new software. I am by no means a computer guy and I had no problems installing the TnT lite 5.0.
roebeet's TNT Lite thread is detailed very nicely and easy to understand. I've been tinkering on/off for a month or so and TNT Lite is my preferred custom rom due to the ease of installation/supplements, not to mention the top notch support. =]
rockdogg said:
Roebeet, I love the new software. I am by no means a computer guy and I had no problems installing the TnT lite 5.0.
Click to expand...
Click to collapse
I am new to the tablet scene myself and was pretty studied up on flashing the 4.2.5 version with cw but 5.0 spooked me would i do the titanium backup sideload before or after i flash 5.0
sigvader said:
I am new to the tablet scene myself and was pretty studied up on flashing the 4.2.5 version with cw but 5.0 spooked me would i do the titanium backup sideload before or after i flash 5.0
Click to expand...
Click to collapse
If you don't have it on there now then the answer is both. Install it before to make a backup then reinstall it after the upgrade to 5.0 to perform the restore. For those that are as paranoid about data loss as me, I also recommend copying the backup to a usb drive or the external sdcard just to be on the safe side.
Thanks for that info, ithinkim about readyto flashthis puppy but I am wondering about the partioning do I do this when I boot into recovery sorry for the noobish questions but I want to be sure
I say get familiar with the nvflsh process and try all the roms till u find one u like
I just downloaded this file from roebeets instructions thinking it was the apx driver but after looking at the file it has alot in it is this something else?
gtab.apx.stock.3588.zip
Another question. .being that my device has never been modded do I need to download something to root it first before I flash 5.0? And would it be a good idea to use the.8 clockwork mod to backup first?
Sorry for the bombardment of noobism but I am truly trying to take all precautions.
And to Roebeet the Guy who said You messed his device up must have been totally clueless you gave probably the most detailed warning label possible thanks for your efforts and help.
Semi-Bricked but OK
Slight newbie myself and I did not follow instructions correctly the first time. The flash recovery worked and then I used the link to the 3588 and all worked well.
If you are willing to take the chance version 5 is great. I am very pleased and Robeet I want to thank you very much for the instructions and the patience to lay it all out for what we need to do. It makes the adventure worthwhile.
Related
Hey there hope this is the right place for this ... Just want to report something that has happened. I am currently unable to use the G tablet stock vanilla TnT... any clue as to why this would happen? I dont really use it anyway however should this be resolved? and would it affect the tablet in the long run if not addressed? I use Launcher pro and the tablet forces itself to that when "home" force closes. I would like to try the TnT lite however am not confident about it.
Do i need to root the device before i hold the power button and vol +? to flash the new rom ( it bugs me that this is all i have to do to put in a custom rom. it seems to easy, unless it is that easy)
Will i lose all the files, PDF's, and documents that i have on it once i flash the new rom ?
As you can see im a noob to Android. Thanks for advice and guidance in advanced and patients.
Follow the instructions in the alternate gtab firmware post. It worked great for me. I would suggest installing cwm so you can back up your existing firmware.
My update would force close during download on the stock firmware. I finally got it to work by minimizing the pop up that displayed the progress. For some reason the screen would crash the download.
Your files should be there but you will lose all user settings and installed apps when you do the factory reset.
This is a common issue with stock, and TnT Lite. The user data seems to be very unstable once you upgrade to different firmware.
The "easiest" thing to do is just wipe the user data. However, if there is certain data you need to keep, I would recommend the excellent Titanium Backup. The only caveat is that the device has to be rooted, to use it.
roebeet said:
The only caveat is that the device has to be rooted, to use it.
Click to expand...
Click to collapse
And Z4root does this easily. Just install and click "root".
RyuFDAC01 said:
Hey there hope this is the right place for this ... Just want to report something that has happened. I am currently unable to use the G tablet stock vanilla TnT... any clue as to why this would happen? I dont really use it anyway however should this be resolved? and would it affect the tablet in the long run if not addressed? I use Launcher pro and the tablet forces itself to that when "home" force closes. I would like to try the TnT lite however am not confident about it.
Do i need to root the device before i hold the power button and vol +? to flash the new rom ( it bugs me that this is all i have to do to put in a custom rom. it seems to easy, unless it is that easy)
Will i lose all the files, PDF's, and documents that i have on it once i flash the new rom ?
As you can see im a noob to Android. Thanks for advice and guidance in advanced and patients.
Click to expand...
Click to collapse
Tntlite is that easy I was surprised. Too since rooting my HTC hero a year and a half ago was so much more hands on
Hey guys.... first off thanks for the advice it worked great it was easy to do... flashed TnT lite and was excited.... i attempted to pull an app from freewareloversDOTcom and was stuck in downloading status for some time even with a good wifi signal... This is where all hell broke loose ....the file i wanted never downloaded.... then the pic gallery forced closed then the launcher forced closed and had to shut down now now its in bootloop....I attempted to power and vol + but nothing happened in fact got a triangle !.... what is needed now.....
LOL at the entire situation this was my fear..... please if someone with extreme patients can list or point to a noob friendly thread on what i need to do
i have a microSD card can that be used read somewhere that i may need that.....
I thank you guys VERY VERY MUCH appreciate this
Hey guys.... first off thanks for the advice it worked great it was easy to do... flashed TnT lite and was excited.... i attempted to pull an app from freewareloversDOTcom and was stuck in downloading status for some time even with a good wifi signal... This is where all hell broke loose ....the file i wanted never downloaded.... then the pic gallery forced closed then the launcher forced closed and had to shut down now now its in bootloop....I attempted to power and vol + but nothing happened in fact got a triangle !.... what is needed now.....
LOL at the entire situation this was my fear..... please if someone with extreme patients can list or point to a noob friendly thread on what i need to do
i have a microSD card can that be used read somewhere that i may need that.....
Click to expand...
Click to collapse
I had a similar problem twice today (installed TnT Lite 2.02 and ran into boot loops). Here's how I recovered. Results may vary, so use at your own risk:
1. Download the vanilla restore from http://forum.tegratab.com/viewtopic.php?f=6&t=16 (this is just to get the recovery\console file unless you want to manually create it).
2. Download the updated stock TnT from http://forum.xda-developers.com/showpost.php?p=9362168&postcount=35
3. Extract the "recovery" folder from gtab_full_vanilla_system_2010_11_09.zip downloaded in step 1.
4. In the recovery folder there is a file called "command" with no extension. Open this file with a text editor (eg. notepad) and edit the line so "SDCARD" says "SDCARD2" instead. Save it and ensure you do not add any extension. It should look like this:
--update_package=SDCARD2:/update.zip
5. Rename the "update-smb_a1002-2967-user.zip" from step 2 to "update.zip".
6. Copy the entire recovery folder with the edited "command" file from step 4 and the "update.zip" from step 5 to the root of your MicroSD card. It's important that the contents on the root of your MicroSD ends up with:
/update.zip
/recovery/command
7. Put the MicroSD in your gTablet.
8. Power on while holding the Volume Up button until you see a message regarding recovery.
9. You should see a graphic showing package box with a progress bar after a short time.
10. Wait until it completes and the unit will restart.
11. If all goes well, you should be back to stock TnT with the last OTA update.
If you are wondering why I just didn't use the gtab_full_vanilla_system_2010_11_09.zip downloaded in step 1, it's because it didn't help me. I initially used the same general method above with the gtab_full_vanilla_system_2010_11_09.zip downloaded in step 1, but my gTablet still continued to boot loop. After a fair amount of panicking and looking over all of the threads here, I found that gtab_full_vanilla_system_2010_11_09.zip added ClockWork Recovery so I was able to use this to copy over the update-smb_a1002-2967-user.zip to my internal SD, install it, and get my gTablet working again. When the problem happened the second time, I used the method above and it worked for me.
Hope this helps. Good luck.
dcom222 said:
I had a similar problem twice today (installed TnT Lite 2.02 and ran into boot loops). Here's how I recovered. Results may vary, so use at your own risk:
1. Download the vanilla restore from http://forum.tegratab.com/viewtopic.php?f=6&t=16 (this is just to get the recover\console file unless you want to manually create it).
2. Download the updated stock TnT from http://forum.xda-developers.com/showpost.php?p=9362168&postcount=35
3. Extract the "recovery" folder from gtab_full_vanilla_system_2010_11_09.zip downloaded in step 1.
4. In the recovery folder there is a file called "command" with no extension. Open this file with a text editor (eg. notepad) and edit the line so "SDCARD" says "SDCARD2" instead. Save it and ensure you do not add any extension. It should look like this:
--update_package=SDCARD2:/update.zip
5. Rename the "update-smb_a1002-2967-user.zip" from step 2 to "update.zip".
6. Copy the entire recovery folder with the edited "command" file from step 4 and the "update.zip" from step 5 to the root of your MicroSD card. It's important that the contents on the root of your MicroSD ends up with:
/update.zip
/recover/command
7. Put the MicroSD in your gTablet.
8. Power on while holding the Volume Up button until you see a message regarding recovery.
9. You should see a graphic showing package box with a progress bar after a short time.
10. Wait until it completes and the unit will restart.
11. If all goes well, you should be back to stock TnT with the last OTA update.
If you are wondering why I just didn't use the gtab_full_vanilla_system_2010_11_09.zip downloaded in step 1, it's because it didn't help me. I initially used the same general method above with the gtab_full_vanilla_system_2010_11_09.zip downloaded in step 1, but my gTablet still continued to boot loop. After a fair amount of panicking and looking over all of the threads here, I found that gtab_full_vanilla_system_2010_11_09.zip added ClockWork Recovery so I was able to use this to copy over the update-smb_a1002-2967-user.zip to my internal SD, install it, and get my gTablet working again. When the problem happened the second time, I used the method above and it worked for me.
Hope this helps. Good luck.
Click to expand...
Click to collapse
Dude thank you so much for your effort in this !!!!! gonna try this as soon as i put my baby to sleep.... will let you know if this worked for me
dcom222 said:
I had a similar problem twice today (installed TnT Lite 2.02 and ran into boot loops). Here's how I recovered. Results may vary, so use at your own risk:
1. Download the vanilla restore from http://forum.tegratab.com/viewtopic.php?f=6&t=16 (this is just to get the recover\console file unless you want to manually create it).
2. Download the updated stock TnT from http://forum.xda-developers.com/showpost.php?p=9362168&postcount=35
3. Extract the "recovery" folder from gtab_full_vanilla_system_2010_11_09.zip downloaded in step 1.
4. In the recovery folder there is a file called "command" with no extension. Open this file with a text editor (eg. notepad) and edit the line so "SDCARD" says "SDCARD2" instead. Save it and ensure you do not add any extension. It should look like this:
--update_package=SDCARD2:/update.zip
5. Rename the "update-smb_a1002-2967-user.zip" from step 2 to "update.zip".
6. Copy the entire recovery folder with the edited "command" file from step 4 and the "update.zip" from step 5 to the root of your MicroSD card. It's important that the contents on the root of your MicroSD ends up with:
/update.zip
/recover/command
7. Put the MicroSD in your gTablet.
8. Power on while holding the Volume Up button until you see a message regarding recovery.
9. You should see a graphic showing package box with a progress bar after a short time.
10. Wait until it completes and the unit will restart.
11. If all goes well, you should be back to stock TnT with the last OTA update.
If you are wondering why I just didn't use the gtab_full_vanilla_system_2010_11_09.zip downloaded in step 1, it's because it didn't help me. I initially used the same general method above with the gtab_full_vanilla_system_2010_11_09.zip downloaded in step 1, but my gTablet still continued to boot loop. After a fair amount of panicking and looking over all of the threads here, I found that gtab_full_vanilla_system_2010_11_09.zip added ClockWork Recovery so I was able to use this to copy over the update-smb_a1002-2967-user.zip to my internal SD, install it, and get my gTablet working again. When the problem happened the second time, I used the method above and it worked for me.
Hope this helps. Good luck.
Click to expand...
Click to collapse
You mind if I steal these directions? It's more detailed than the one I wrote up on my TnT Lite post. I'd like to post it there (specifically the command file, as some people have issues understanding the "SDCARD2" change).
And thanks for posting your experiences to help the other users here!
roebeet said:
You mind if I steal these directions? It's more detailed than the one I wrote up on my TnT Lite post. I'd like to post it there (specifically the command file, as some people have issues understanding the "SDCARD2" change).
And thanks for posting your experiences to help the other users here!
Click to expand...
Click to collapse
Please do if they look to be correct. Hopefully we'll see confirmation that these instructions work.
I appreciate all your work on the gTablet!
dcom222 said:
Please do if they look to be correct. Hopefully we'll see confirmation that these instructions work.
I appreciate all your work on the gTablet!
Click to expand...
Click to collapse
Same here Roebeet thanks for your work...dcomm222 thanks again... So I tried to only install the TnTlite 2.0 from the microsd card, it read it, looked to have loaded it, and it went right into the bootloop again.... I really want TnT lite ......
so now i am going to try your method... fingers crossed
RyuFDAC01 said:
Same here Roebeet thanks for your work...dcomm222 thanks again... So I tried to only install the TnTlite 2.0 from the microsd card, it read it, looked to have loaded it, and it went right into the bootloop again.... I really want TnT lite ......
so now i am going to try your method... fingers crossed
Click to expand...
Click to collapse
I had no luck trying to re-flash to 2.0X once I got in the boot loop - I couldn't get past it no matter what until I went back to stock. Once I was back at stock I could re-flash to 2.0X from the internal SD. I'm still trying to figure out what's getting me in the boot loop - everything seems to work great for a while.
Good luck!
dcom222 said:
I had no luck trying to re-flash to 2.0X once I got in the boot loop - I couldn't get past it no matter what until I went back to stock. Once I was back at stock I could re-flash to 2.0X from the internal SD. I'm still trying to figure out what's getting me in the boot loop - everything seems to work great for a while.
Good luck!
Click to expand...
Click to collapse
GOT IT BACK!!!! geez man I was full on panic mode
have you flashed back to TnT lite back yet and how long does it last? Damn i am so tempted to go back im thinking it has something to do with what we attempted to load on the tablet ... i dont know just looking for a reason to Flash ....can this constant recovery flash do any damage to the tablet? I would like to try other Roms but dont want to mess my tablet up..
BTW i got this EUL when it rebooted especially sections 4.1 and 4.2 wtf!!! sorry about that but that is how i felt
Thanks again guys!!!!
RyuFDAC01 said:
GOT IT BACK!!!! geez man I was full on panic mode
have you flashed back to TnT lite back yet and how long does it last? Damn i am so tempted to go back im thinking it has something to do with what we attempted to load on the tablet ... i dont know just looking for a reason to Flash ....can this constant recovery flash do any damage to the tablet? I would like to try other Roms but dont want to mess my tablet up..
BTW i got this EUL when it rebooted especially sections 4.1 and 4.2 wtf!!! sorry about that but that is how i felt
Thanks again guys!!!!
Click to expand...
Click to collapse
If I remember correctly, the stock firmware with the OTA update will prompt you to accept a license and prompt to set the time, etc....
I just flashed the TnT 2.02 again. So far it seems OK, however it did the first 2 times I did it as well. I followed all of the instructions at "forum.androidcentral.com/showthread.php?p=442691#post442691" except I substituted using roeboot's TnT. Once I did it I had everything working (flash, market, etc...). Both times the boot loop happened when I tried to install or uninstall something, and both times were after a few hours of use. I tried a third time and almost instantly got into a boot loop, but I think I got ahead of myself in that try and did some things out of order. The good thing is that I was able to recover each time.
Out of curiosity, did your tablet come with a gray or green cloth to clean the screen? The reason I ask is that I thought I had seen somewhere that this might be an indication of a difference in gTablets.
The EULA shows up with a new stock firmware - and yeah 4.1 / 4.2 kinda bugged me too. I never selected "I Agree" - fark that.
As for the boot loops, it seems that we still can't pin it down - maybe it's just random, I don't know.
Hi,
I was stuck after bootlooping using Cyanmod, then flashing NVflash still didnt fix the issue, this fix did it for me. Thanks for getting me back up & running. I will give another shot at using cyanmod now that I have all the files needed to get me back.
BTW< I have a green cloth. What does that mean?
Thanks,
Rich
dcom222 said:
If I remember correctly, the stock firmware with the OTA update will prompt you to accept a license and prompt to set the time, etc....
Out of curiosity, did your tablet come with a gray or green cloth to clean the screen? The reason I ask is that I thought I had seen somewhere that this might be an indication of a difference in gTablets.
Click to expand...
Click to collapse
My tab came with a grey cloth... funny thing though I got mine on the second wave of shipments to sears... I NEVER had any issues with the time i just set it and it kept the time... I remembered that when these first came out that was a problem... i thought mine was diff because i never had any issues with time reseting itself... anyway Thanks again dude for your help hope i could play this forward to someone more noobier than me
Roebeet looking forward to your TnT lites...
dcom222 said:
After a fair amount of panicking and looking over all of the threads here, I found that gtab_full_vanilla_system_2010_11_09.zip added ClockWork Recovery so I was able to use this to copy over the update-smb_a1002-2967-user.zip to my internal SD, install it, and get my gTablet working again. When the problem happened the second time, I used the method above and it worked for me.
Click to expand...
Click to collapse
I now have clockwork recovery installed... How do i copy the update.zip from external microsd to internal microsd... mounting sd-ext gives an error..
E:Can't mount /dev/block/mmcblk0p2
(No such file or directory)
Error mounting SDEXT:!
Frustration levels are high with this device!!
Thanks!
a "me too" reboot problem
I was able to install TNT Lite 2.0, then 2.11. I got Clockwork Recovery installed as well.
The market would start, but if I did a search for obvious things like "Kindle", the market would give an error that it didn't exist in the market. Thinking it was the error situation described here:
http://forum.xda-developers.com/showthread.php?t=845175
I applied those instructions, and rebooted.
Upon reboot, it ended up in a continual reboot loop.
Trying to do the start with volume+power, it brings up Clockwork Recovery, and when told to wipe data/factory reset, it stays in the reboot loop. When told to apply sdcard's update.zip, it looks only at the one on the internal sdcard, which is for CWR, and goes back into the loop.
At that point I setup a microSD with the information from this post:
http://forum.xda-developers.com/showpost.php?p=9439414&postcount=7
including changing the line from sdcard to sdcard2. Again it doesn't recognize that the internal sdcard2 is plugged in, and attempts to mount it with CWR (mount /sd-ext) yields the error:
E:Can't mount /dev/block/mmcblk0p2
(No such file or directory)
Error mounting SDEXT:!
So, unfortunately I'm at an impasse, like the previous poster. I just bought the tablet a couple of days ago, so I'm far from expert at tweaking it into working.
Any suggestions on what to do, are greatly appreciated.
PS - Bought the gtablet from Office Depot, and received a green cloth.
Boot into clockwork recovery and go to advanced and format SD, use the 2gb and 512mb I believe, then flash TNT or another rom. That fixed my boot loop.
(I've spent a long time reading and I don't want to waste your time, so if the answers to this have been posted before please just tell me to keep searching.)
New G tablet arrives in 3 days. I have very little tech knowledge, but I enjoy the journey. Would someone mind please putting the following in the CORRECT order for me?
1. Fully charge G tab and turn it on
2. Install Titanium Backup on G tab (is this done like I would install an app on an iphone, or do I download to my PC and move it to the g tab?)
3. Backup stuff (everything)? To where? My PC?
4. Install clockwork as per instructions here (I think I'll use G tab's internal SD card)
5. Use clockwork to repartition internal SD card (2048 and 0)
6. Use clockwork to delete data and cache
7. Install Vegan 5.1 as per instructions here.
8. Install Flah and Market capability as per instructions here.
9. Install ADW launcher (not sure what this is, but it looks good on youtube). How do I install it? Is it like an iphone app installation, or...?
10. Some of the posts I've read mention a need for a file browser. Do they mean on my PC, or on the G tab? How do you get one on the G tab? Through Market?
11. Calibrate touch screen as per instructions here.
12. Anything I've forgotten?
Thanks for your help and understanding for a complete novice.
This has all been posted before as you thought.
I would not worry about backing up when you first get it as there will be nothing really on it but the stock rom.
if you goal is to load a Rom like TNT or Vegan from day one.
Root
Clockwork Mod
load Rom
and away you go.
There are directions all over the place to the above.
Once you get the rom loaded and all setup then get titanium backup installed and do a backup. Save yourself hours and pay for the pro version, it will allow you to run batch backup/restores and not touch your tablet while it runs.
Hope that helps now go read and search while you await your Gtab and have FUN! that is what it is all about.
Chances are you wont even have to root first.
Install Clockwork
Partition
Install Vegan
thebadfrog said:
Chances are you wont even have to root first.
Install Clockwork
Partition
Install Vegan
Click to expand...
Click to collapse
Thanks guys. I like the sound of these 3 simple steps, but what do you mean "chances are..."? Is it a random thing?
goog64 said:
Thanks guys. I like the sound of these 3 simple steps, but what do you mean "chances are..."? Is it a random thing?
Click to expand...
Click to collapse
This is my first Android device but I'm good with PC's.
Anyway, I fired it up from new installed clockwork, did the partition 2048,0 as suggested and for me installed tnt-lite and all is good. It was probably stock for about 10 minutes of its life.
Thanks Stuggy. That's what I'll try (except with Vegan, I think).
goog64 said:
Thanks guys. I like the sound of these 3 simple steps, but what do you mean "chances are..."? Is it a random thing?
Click to expand...
Click to collapse
For some reason I had to root first when I installed the update after the 3389 update. I think it was just me but it was just another step. Installed z4root, got root, and moved on
Thanks badfrog.
Just to give you an idea where I'm at.....I had no idea what 3389 is so I searched for it. Many pages came up, but they all assume a certain level of background knowledge that I don't have. Please tell me, is 3389 the ROM that comes with the G tab?
If so, why would you be updating that if you had a different ROM already installed (Vegan, TNTlite, etc)?
Other pages I've seen have said that installing Vegan or TnTlite IS rooting, whilst still other pages have said that installing clockwork mod is rooting? Is this correct?
I can't find out what rooting actually means because every page I find assumes the reader already knows what rooting is. I will keep searching for a site for android dummies (and stop wasting your time).
rooting a device is basically changing system permissions so that you have full access to read, write and manipulate all files on the device. In Linux if you are root you have total control over the system. I believe that I read somewhere that the GTab is already set so that you have total control. Other devices you would use an app like z4root and it would change the security settings so that you had root access.
hmmm....the plot thickens. Thanks Sm0k3d 0ut, I'm looking forward to confirmation of that to clear up my confusion!
Hello - New user here and planning to do the same. My tablet arrives today but my SD arrives next week.
Can I use an 128MB micro SD to do the Clock mod before the larger card arrives?
Thanks.
bevbeng said:
Hello - New user here and planning to do the same. My tablet arrives today but my SD arrives next week.
Can I use an 128MB micro SD to do the Clock mod before the larger card arrives?
Thanks.
Click to expand...
Click to collapse
Check this thread on clockwork
http://forum.xda-developers.com/showthread.php?t=865245
goog64 said:
Thanks Stuggy. That's what I'll try (except with Vegan, I think).
Click to expand...
Click to collapse
Try them both, they are both great roms and you will become more comfortable the more roms you flash.
Most important tools are this site and titanium backup "PRO"
copc said:
Try them both, they are both great roms and you will become more comfortable the more roms you flash.
Most important tools are this site and titanium backup "PRO"
Click to expand...
Click to collapse
Thanks copc. I also read somewhere that backing up can be done with Clockwork. Is that true? If so, does a novice like me really need titanium backup?
Also, one more question: in case I ever want to restore to the stock ROM that the G tab comes with, do I need to do anything special BEFORE I install Clockwork and the new ROM? Or can I just change back to original no matter what I do now?
(G tab arrives tomorrow. Can't wait!)
goog64 said:
I also read somewhere that backing up can be done with Clockwork. Is that true? If so, does a novice like me really need titanium backup?
Click to expand...
Click to collapse
I still haven't received my Zpad yet, so can't talk from experience. But from what I have read it seems that titanium backup backs up the apps (and maybe data?) and clockwork makes a ROM image of you Tablet (or something similar to that). So I think they are different types of backups and you should probably do both.
But I could be horribly wrong.
SnakeManJayd said:
I still haven't received my Zpad yet, so can't talk from experience. But from what I have read it seems that titanium backup backs up the apps (and maybe data?) and clockwork makes a ROM image of you Tablet (or something similar to that). So I think they are different types of backups and you should probably do both.
But I could be horribly wrong.
Click to expand...
Click to collapse
You are spot on, Titanium Backup allows you to back up and restore individual apps and data (you can also use it to sideload apps you have already installed on another Android device). CW will make a backup of your entire system (internal SDCard) so you can restore if something goes awry.
goog64 said:
(I've spent a long time reading and I don't want to waste your time, so if the answers to this have been posted before please just tell me to keep searching.)
New G tablet arrives in 3 days. I have very little tech knowledge, but I enjoy the journey. Would someone mind please putting the following in the CORRECT order for me?
1. Fully charge G tab and turn it on
2. Install Titanium Backup on G tab (is this done like I would install an app on an iphone, or do I download to my PC and move it to the g tab?)
3. Backup stuff (everything)? To where? My PC?
4. Install clockwork as per instructions here (I think I'll use G tab's internal SD card)
5. Use clockwork to repartition internal SD card (2048 and 0)
6. Use clockwork to delete data and cache
7. Install Vegan 5.1 as per instructions here.
8. Install Flah and Market capability as per instructions here.
9. Install ADW launcher (not sure what this is, but it looks good on youtube). How do I install it? Is it like an iphone app installation, or...?
10. Some of the posts I've read mention a need for a file browser. Do they mean on my PC, or on the G tab? How do you get one on the G tab? Through Market?
11. Calibrate touch screen as per instructions here.
12. Anything I've forgotten?
Thanks for your help and understanding for a complete novice.
Click to expand...
Click to collapse
1,4,5,7,8, and 11 in that order will get you in business. Titanium Backup should be installed after you get Vegan installed, as there is really nothing to back up in stock. Data and cache will be deleted as part of the partitioning process (that's how I've understood it), and a file browser is already installed with the Vegan image. #9 is just fluff, ADW is a great launcher, but is not necessary to get up and running. If I recall correctly, it will install like an app - you should be able to find it in the Market.
#12 - Though it is not necessary, Root Explorer is a real handy app to have if you are going to tear around with Android's inner workings. Less than $5 on the market, but I found it worth every penny so far.
You will find many different thoughts on the process laid out above, this is just worked for me when I was starting out. The most important thing is Clockwork. Do. That. First.
bevbeng said:
Hello - New user here and planning to do the same. My tablet arrives today but my SD arrives next week.
Can I use an 128MB micro SD to do the Clock mod before the larger card arrives?
Thanks.
Click to expand...
Click to collapse
I did mine (CW .8 and TNTLite) from a 256MB card, and there was still plenty of room - a 128MB card should do you fine. In fact, if you are doing it from a PC (I can't confirm for Mac as I don't have one), you can install CW off of the card, use CW to partition the tablet storage, connect the tablet to your PC, and then use CW to mount the tablet as USB storage so you can copy over the ROM image to the tablet and install.
As far as CW, use the .8 version. I have heard of problems from others using newer versions, and it seems that .8 is what the devs recommend. You can find a link to it in here: http://forum.xda-developers.com/showthread.php?t=865245
BigJohn
Thanks BigJohn. I REALLY appreciate the time you took with that answer, and you explained it very clearly. My tablet arrives today (I hope), and you have given me a lot of confidence.
goog64 said:
Thanks BigJohn. I REALLY appreciate the time you took with that answer, and you explained it very clearly. My tablet arrives today (I hope), and you have given me a lot of confidence.
Click to expand...
Click to collapse
Welcome to MOD-dom, it's awesome.
Thought I backed up original ROM, when I opened the file today it was blank (NVFLASH).
I did copy the internal sd and have a copy of that but its not the right file type.
I also have some image files of the ROM, can I use either of these?
How about a little more information.... what file did you open that was blank?
Do you have files that look like 09_APP_raw.img? Did you use a script or just type a bunch of stuff in at the command line?
How did you copy the internal SD card that it is not the right file type?
What are these image files of the ROM?
So many questions...
The way I copied the internal sd was in the file manager, had to click show hidden files to do it.
The blank file was a file that brk asus transformer root toolkit made. Went to do a restore with it the next day and file not found,
The image files I have are ones that another version cwm m ade doing a backup a few times that I got from the market. But that version of cwm doesnt support asus.
OK- it that helps. If you just want the stock firmware, you can get that from the ASUS website. You might have to get the 8.6.5.9 version and then upgrade to 8.6.5.13 via the ota. From there you can root again and/or install CWM if you want.
There are TF specific versions of CWM- solarnz and roach each have a version in the dev section. These might allow you to flash the data partition from your backups to restore any apps that you installed. I think brk's tool uses one of the modded versions of CWM.
As far as the internal sd card, you might have to copy those over with an external SD card/adb/ftp/etc.
If you want to restore one of the CMW images you have, that might be tricky, but you can extract them with the unyaffs tool. Google should find it for you. They might be flashable with one of the modded versions of CWM, but I think the modded versions have a slight difference in the parts that they backup/restore. You can try the "advanced restore" option to restore the data.img, but I'm not sure what would happen.
I looked at asus website for the rom, all I found were firmware and kernels are those the roms? I would prefer doing it that way.
Yup- select the android OS and pick your country specific firmware (aka ROM).
It might be tricky if you are downgrading I.e., you flashed 8.6.5.13 and want to flash the stock 8.6.5.9 firmware. I'm not sure if you can downgrade the "easy" way.
The easy way is to unzip the firmware and place the whole ASUS folder on your external SD card. Turn on the TF and insert the SD card when it is running- a notification should pop up to flash. ASUS has some documentation with pictures in the Manuals section. Look for one of the "Update SOP" files.
Let me know if that works. I've never tried to downgrade that way, so I'm not sure if it will work because you might be on a higher build number. If it doesn't, there is another way if you are rooted or you can use nvflash.
Let me get this right, do I use the firmwaree or the kernel.
Use the firmware.
Thanks, I reread the firmware aka rom. I'm in the us so the us one right! Will let you know if it works, says something about downgrading in there...
If it won't let you downgrade, then you have to do it the "hard" way.... but you have to be rooted.
Download the firmware and unzip it. It should be something like ASUS/Update/some.zip
Unzip the some.zip file and it'll contain a blob. Copy the blob to your external sd card or use adb to push it to your TF.
It would be a good idea to verify the MD5 sum of the blob. The US one that I downloaded for 8.6.5.9 is
MD5(blob)= 57d4c4342277d39e523e26b943891a1f
Use terminal on the TF or adb shell from your PC and type the following:
Code:
su
dd if=/Removable/MicroSD/blob of=/dev/block/mmcblk0p4
the last three characters are zero-pee-four. It's important to get this right or you could mess up your TF.
If you copied it somewhere else, then adjust the /Removable/MicroSD/blob part.
It will take a while because it's a big file, but when it's done, type "reboot" or just turn off, then turn on your TF, and it will flash you back to stock. You should see a blue progress bar that moves very slowly. Be patient, it takes a while and should reboot when it's done. You will be unrooted with a stock recovery at this point.
Afterwards, you can verify that you have the downgraded firmware and then check updates to receive the OTA to upgrade to 8.6.5.13. Lastly, clean up and remove the blob file from your sdcard- it's 521MB!
Your awsome man! You took all that time to help me out and I won't forget it gee!
So did the downgrade work, or did you have to flash the blob?
Not gonna try tonight, thats how I lost the backup as I was tired... Will try tomorrow and will let you know what workes.
I have prime on here now so I dont think that would technically be a downgrade?
Yes I am rooted.
So while I have you, will a rooted machine get OTA updates?
Yup, the updates still download, but they usually break root or won't flash because something is not stock, such as kernels.
Of course, you can mod them so they flash and keep root.
Good idea about starting fresh tomorrow.
r u Randal in Ca?
No, sorry.
No worries, just reminded me of the big guy. Will let you know how everything goes. I try to be sure before I comet to a change I can't recover from so will have to sus up everything first.
I want to thank you again for the help, I hope you get compensated for it?
Hardy har har, and I'm still in thi situation!
We will see tomorrow!
Hi,
I checked through many threads to see if anyone had a similar problem but couldn't find anything unfortunately.
Background :
I was running a Lite'ning ROM on my Samsung Galaxy S2. You're probably familiar with this ROM, but for those who aren't it gets flashed with ODIN and comes rooted and pre-installed with CWM.
I forget which version of Lite'ning ROM it was, but I am fairly certain it was pre-1.5 as the bundled CWM was definitely version 3.x.x.x (later versions I found had 4.x.x.x and 5.x.x.x).
I wanted to try a version of GalnetMIUI for something a bit different and hadn't changed ROMs in quite some time, so I booted into CWM 3.x.x.x (maybe 3.0.0.2?) and did a backup to the internal SD. This came in at around 1.4 GB and comprised of 4 files :
cache.img
data.img
nandroid.md5
system.img
I copied these to my PC too, just in case they somehow got erased from my phone.
Once I'd done this, I then copied the new ROM .zip file (latest version of GalnetMIUI) to the root of the internal SD, booted the phone into CWM, wiped user data and Dalvik cache, then proceeded to install it.
The problem :
I can't get my apps or data back. I was under the false impression that my Google account was automatically backing this up for me, and would restore everything once logged in as it had in the past (factory resets etc.). So once this didn't happen, I tried using CWM to revert back to how things were before installing the new ROM but although the restore appears to work I end up with issues.
I've tried a number of different ROMs and they either get stuck in 'boot loops' or a black screen after running through the restore procedure. I've tried restoring just data via the 'Advanced' option but this doesn't help.
I was under the impression that I'd be able to fully restore the ROM backup if I needed to, and have the phone running exactly how it was prior to messing around. It would seem this is not the case.
In desperation I tried flashing every Lite'ning ROM from version 1.0 to 4.2, restoring my backup each time but as mentioned I always get boot issues.
Have I lost my data? I hope not, as I had 'To Do' lists and all sorts of things that would cause problems if they were not retrievable. I realise this is a lack of knowledge and foresight on my part. I'm thinking now that I should have run Titanium Backup prior to this, and not assumed that CWM was going to provide a complete solution.
Hope all this makes sense and if any of you have the time to read through and offer advice it would be greatly appreciated. I am currently running a very pretty and slick GalnetMIUI without any of my data!
Thanks in advance.
download cwm 2.5.x.x its better
[email protected] said:
download cwm 2.5.x.x its better
Click to expand...
Click to collapse
Thanks for that, I'll give it a go tonight after work. Am I right in thinking that if it doesn't work I can extract the individual files and insert them manually to get my app data back?
OK, so after hours of searching I'm still no wiser as to how to install CWM 2.5.1.2
I found a zip file that was apparently version 2.5.1.2 but when I tried to install it from inside CWM 5.0.2.6 (included with GalnetMIUI) it sometimes gives an error, sometimes it reboots CWM and sometimes it simply says it has successfully installed (it lies). No matter what it says or does, it doesn't seem to actually replace version 5.0.2.6 with the older one and every time I do the three-finger boot it loads up the latest version like nothing changed.
I'm just so lost. All I want to do is restore my old backup, get my data back and move on. Please someone help me before I go insane from all this research!
[EDIT] In case any more information is needed, my exact procedure for installing version 2.5.1.2 of CWM went like this :
Download 2.5.1.2 zip file
Copy zip file to root folder on internal SD
Boot into CWM 5.0.2.6
Select "install zip from sdcard"
Select "choose zip from sdcard"
Navigate to 2.5.1.2 zip file, select and confirm
Can anyone help me at all?
In particular I'd like to know how I can downgrade to CWM 2.5.1.2 or similar in order to give [email protected]'s suggestion a go.
Failing that, if anyone has any suggestions whatsoever about how I can get my backup data restored it would be greatly appreciated. After spending some time with MIUI - in particular the Galnet ICS build - I have nothing but praise, but I really have to get my data back!
You should be able to downgrade through ROM manager. Go to "All Clockwork Mod Recoveries" and just flash one that is not 5.x.x. Any backup not made with version 5 will not work with the new version So if you can flash one that is version 2, 3 or 4 you should be good to go. If that doesn't work you can fastboot flash it. There are guides on how to do that.
Wait.....did you mount /system before installing the CWM zip ?
Sent from my GT-S5830 using XDA App
Sorry for the delayed reply, for some reason I didn't get an email notification that my thread had been updated.
lowandbehold said:
You should be able to downgrade through ROM manager. Go to "All Clockwork Mod Recoveries" and just flash one that is not 5.x.x. Any backup not made with version 5 will not work with the new version So if you can flash one that is version 2, 3 or 4 you should be good to go. If that doesn't work you can fastboot flash it. There are guides on how to do that.
Click to expand...
Click to collapse
For some reason, when I select "All ClockworkMod Recoveries" the only two options are 4.0.1.4 and v4.0.1.4. I'll have to look into "fastboot" flashing as I've never heard of that.
By the way, if I boot into CWM via ROM Manager the version that loads is 4.0.1.5, but if I perform the three-button combo when switching my device on I get version 5.0.2.6.
EmoBoiix3 said:
Wait.....did you mount /system before installing the CWM zip ?
Sent from my GT-S5830 using XDA App
Click to expand...
Click to collapse
I didn't, is that something I should try?
Edit - Just tried this and at first it rebooted CWM and the version number hadn't changed. Doing this again yielded me the following error with no change in version number :
Code:
E:Error in /sdcard/CM V 2.5.1.2_update.zip
(Status 0)
Installation aborted.
I found out that I can extract the contents of my backed up .img files using unyaffs.exe.
Unless I'm doing something wrong, it would appear that my backup is corrupt somehow. When trying to extract data.img, it processes for a while and does bring back a lot of files but I also get the following :
Code:
read image file
: Bad file descriptor
read image file
: Bad file descriptor
data.img is around 1.2GB but the files I extract only amount to around 190MB.
It would appear that I don't have my contacts database in there which is annoying as for some reason there were quite a few that didn't get synced to Google's servers.
After tinkering with the tablet and trying my best to restore it I finally was able last night to restore it to a clean install using this method. I'm sure there may be other ways to do it as well but this worked for me and was painless.
1. Make sure the tablet is rooted/unencrypted using Vampirefo's guide:
http://forum.xda-developers.com/android/development/root-nextbook-ares-8-twrp-recovery-t3133165
2. Make a backup of your System, Boot, etc. of your current boot-looped ROM with TWRP.
3. With TWRP's file manager, go into the internal storage and delete all the files within the backup folder.
4. Download this backup:
https://onedrive.live.com/?id=19085CD12562E567%21931&cid=19085CD12562E567&group=0&parId=19085CD12562E567%21925&authkey=%21AHmuVovnpuzX0tI&action=locate
5. Extract the files from the zip and copy them over to the backup folder on the internal storage.
6. Go to Restore on TWRP and dance.
After many attempts of trying to restore from an external SD card and from just creating my own TWRP backup folder, TWRP just wouldn't see the backup until I copied and replaced. I'm glad it worked and I hope it helps anyone else who needs a restore.
Credit goes to jmreyesiii for providing the backup files and vampirefo for the rooting.
PhantomOSX said:
After tinkering with the tablet and trying my best to restore it I finally was able last night to restore it to a clean install using this method. I'm sure there may be other ways to do it as well but this worked for me and was painless.
Credit goes to jmreyesiii for providing the backup files and vampirefo for the rooting.
Click to expand...
Click to collapse
An absolutely great post! You need a special thanks because this ability to recover from catastrophe likely will encourage others to move forward with more daring mods. I feel much more secure in playing with a few ideas knowing you have the base Rom and recovery spelled out and that it actually worked (Yes, I knew how, but knowing it worked for sure is huge!)
Thanks,
Freddy999
Now if only some kind hearted dev would release a ROM....
Actually, after you root and decrypt it, and fix the cpu governor and such, and get rid of the google apps that you don't use, with the exception of the lollipop HW overlay flaw it is not a bad ROM to start with. I wiped most of the Google stuff and put in Nova launcher. Now the device is quite manageable and very fast without much further help. Here is a pretty good summary of the device for anyone who has the tools to build a ROM: http://specdevice.com/showspec.php?id=ee2d-39de-0033-c5870033c587 with the exception I can not find that the FM radio exists in the device although the hardware seems to say it is there..........
what do you mean cpu governor?
adamx said:
what do you mean cpu governor?
Click to expand...
Click to collapse
Playstore: No frills CPU control
set it ondemand, noop
You might want to get also CPU spy reloaded to see the effect/
The backup file expired (or something) on OneDrive. Would you mind re-upping it somewhere? Thanks!
PhantomOSX said:
After tinkering with the tablet and trying my best to restore it I finally was able last night to restore it to a clean install using this method. I'm sure there may be other ways to do it as well but this worked for me and was painless.
1. Make sure the tablet is rooted/unencrypted using Vampirefo's guide:
http://forum.xda-developers.com/android/development/root-nextbook-ares-8-twrp-recovery-t3133165
2. Make a backup of your System, Boot, etc. of your current boot-looped ROM with TWRP.
3. With TWRP's file manager, go into the internal storage and delete all the files within the backup folder.
4. Download this backup:
https://onedrive.live.com/?id=19085CD12562E567%21931&cid=19085CD12562E567&group=0&parId=19085CD12562E567%21925&authkey=%21AHmuVovnpuzX0tI&action=locate
5. Extract the files from the zip and copy them over to the backup folder on the internal storage.
6. Go to Restore on TWRP and dance.
After many attempts of trying to restore from an external SD card and from just creating my own TWRP backup folder, TWRP just wouldn't see the backup until I copied and replaced. I'm glad it worked and I hope it helps anyone else who needs a restore.
Credit goes to jmreyesiii for providing the backup files and vampirefo for the rooting.
Click to expand...
Click to collapse
Yes the link to the backup is dead, can OP or anyone else upload another? I wiped the internal storage and now android has no home or back buttons so I cant get out of apps
Uploaded to MEGA https://mega.nz/#!1J4VwDxL!ZvRkBlvD7m-ldc5qQxA_xDWfUiu6WDdJa3nAMvDfhZY
stevemp said:
Uploaded to MEGA https://mega.nz/#!1J4VwDxL!ZvRkBlvD7m-ldc5qQxA_xDWfUiu6WDdJa3nAMvDfhZY
Click to expand...
Click to collapse
Thanks!
stevemp said:
Uploaded to MEGA https://mega.nz/#!1J4VwDxL!ZvRkBlvD7m-ldc5qQxA_xDWfUiu6WDdJa3nAMvDfhZY
Click to expand...
Click to collapse
Thanks Steve you're a true bro
THANK YOU!!!!!!!!!
I rooted and removed the encryption from my ARES 8 but then when messing with an (official) flashing tool I ended up formatting my system partition., So I had NO OS at all., But I did have TWRP., And now thanks to your post I have a living breathing working tablet again., By all your gods (or none at all if that's your thing) I Bless you! Thank you X Infinity! :good::good::good::good::good:
-Eric.
P.S. I got it to work from my SD card but I did have to make a backup with TWRP first, then pop the SD card into the PC delete all the files from the folder and copy your files into the folder that TWRP had created. Otherwise it didn't show up at all... Anyway Thanks again! :victory:
PhantomOSX said:
After tinkering with the tablet and trying my best to restore it I finally was able last night to restore it to a clean install using this method. I'm sure there may be other ways to do it as well but this worked for me and was painless.
1. Make sure the tablet is rooted/unencrypted using Vampirefo's guide:
http://forum.xda-developers.com/android/development/root-nextbook-ares-8-twrp-recovery-t3133165
2. Make a backup of your System, Boot, etc. of your current boot-looped ROM with TWRP.
3. With TWRP's file manager, go into the internal storage and delete all the files within the backup folder.
4. Download this backup:
https://onedrive.live.com/?id=19085CD12562E567%21931&cid=19085CD12562E567&group=0&parId=19085CD12562E567%21925&authkey=%21AHmuVovnpuzX0tI&action=locate
5. Extract the files from the zip and copy them over to the backup folder on the internal storage.
6. Go to Restore on TWRP and dance.
After many attempts of trying to restore from an external SD card and from just creating my own TWRP backup folder, TWRP just wouldn't see the backup until I copied and replaced. I'm glad it worked and I hope it helps anyone else who needs a restore.
Credit goes to jmreyesiii for providing the backup files and vampirefo for the rooting.
Click to expand...
Click to collapse
It's says root only on Linux I have windows xp does anyone know how I can root this on this type of computer thank u
Here is a question, we bought one for the grandson.. How come when you open up the play store, and choose apps, it does not show any that came with the tablet itself, kind of like you see when you go to play store on a smartphone..
really need some help
ericzollman said:
I rooted and removed the encryption from my ARES 8 but then when messing with an (official) flashing tool I ended up formatting my system partition., So I had NO OS at all., But I did have TWRP., And now thanks to your post I have a living breathing working tablet again., By all your gods (or none at all if that's your thing) I Bless you! Thank you X Infinity! :good::good::good::good::good:
-Eric.
P.S. I got it to work from my SD card but I did have to make a backup with TWRP first, then pop the SD card into the PC delete all the files from the folder and copy your files into the folder that TWRP had created. Otherwise it didn't show up at all... Anyway Thanks again! :victory:
Click to expand...
Click to collapse
i am having the same basic problem, i flashed twrp and supersu not sure what i did wrong or if it rooted succesfuly, i do have twrp but wont boot past recovery. twrp says it cant mount data and i cant back up., and have no os. how can i fix this ?
im new to this whole thing so please give me step by step if you can and any links or downloads you can, please help :crying: this tablet is how i comunicate w my daughter... in colorado. i need it up and running
I partitioned my Ares 8 and now it is stuck awaiting fastboot command. Any ideas?
Can someone help me? Why does mine fail when restoring system?
My ares 8 is stuck in DNX mode and will not enter recovery, and is pretty hosed. I need a scatterfile and rom so I can flash it and use it for something besides a paperweight. Thanks 1000 times in advance!
Ahhh, after several hours of reading, I managed to get recovery back, but cannot seem to flash a rom successfully, and also my backup - says it was successful but when I reboot, it goes straight to DnX mode and I have to use a batch file to get back to recovery. But progress has been made and hopefully by today I will have it back up and running an OS
Hi, i have Nextbook Ares 8 after rooing i can't boot the device it has an error says "Your device is unable to start because the Android OS image has failed to verify" please help me to fix this problem.