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I have been reading all kinds of stuff on flashing ROMS. I don't know if it is really that complicated, as it seems. I have looked at the wikkis at XDA and Cyanogen...there are lots of similarities, but trying to figure out exactly what you need to flash a ROM seems to be anything but straight forward. There also seems to be no absolute SINGLE meaning for some terms.
Do you need to install SDK, or is it already part of something, like Titanium, ClockworkMod or Busybox?
Every time I look at another source of information, I end up thinking that there is an almost infinite number of ways to skin the ROM flashing cat.
I am just looking for a clear linear path to follow.
Rooted sgh-i727R
You have to Root the phone first, if you don't do that then you can't do anything to the phone. Then flash a Clockwork Recovery, and install the ROM.
What phone are you using though?
ZiggyR2005 said:
You have to Root the phone first, if you don't do that then you can't do anything to the phone. Then flash a Clockwork Recovery, and install the ROM.
What phone are you using though?
Click to expand...
Click to collapse
It's a Rooted Samsung GS ll Sgh-727R. I thought it was a bit more complicated than that?? Don't you need to copy the rom to your p.c. 1st?
In one of the wikkis they were also talking about unmounting the SD card etc. Every time I read one" Guide",it conflicts with the next..
Is flashing the ROM as straight forward as the instructions in this link?
And, just to be sure. In the instructions, when they say" SD CARD", do they mean; Download the CM7 & Google apps to the INTERNAL SD, or the Removable EXTERNAL SD CARD?
sdcard usually means the internal sdcard, i.e. /mnt/sdcard
the instructions differ from device to device, because some just can't be flashed another way.
it usually boils down to two methods:
- put the rom on the sdcard, and use a recovery manage like CWM (clock work mod) to flash the rom from the device itself
OR
- install the correct usb drivers on your computer and use a tool like heimdall/odin to flash the rom from your computer
i did not see any link
Dark3n said:
sdcard usually means the internal sdcard, i.e. /mnt/sdcard
the instructions differ from device to device, because some just can't be flashed another way.
it usually boils down to two methods:
- put the rom on the sdcard, and use a recovery manage like CWM (clock work mod) to flash the rom from the device itself
OR
- install the correct usb drivers on your computer and use a tool like heimdall/odin to flash the rom from your computer
i did not see any link
Click to expand...
Click to collapse
Thanks! Would I be correct in thinking, that it's easier to just flash the ROM from the phone?
Sorry, here are a couple of the links that I was looking at
http://forum.xda-developers.com/showthread.php?p=12874680#post12874680
http://www.theandroidsoul.com/cyanogenmod-7-cm7-for-the-att-galaxy-s-ii-skyrocket-sgh-i727/
The HUGE difference between the two instructions, is what was kind of confusing.
One other question... if your phone is rooted, but you still have the stock ROM, will you still be able to update to ICS via OTA once it becomes available?
THANKS!
What counts as easy depends on what you find easy ;-).
I prefer flashing through recovery mode.
Sometimes it is not possible to flash it through recovery and you need odin/heimdall for certain steps (i.e. when your recovery does not allow flashing of unsigned files and you need to flash a custom recovery like CWM).
It is also easier to brick your device by ticking the wrong box in odin/heimdall ;-).
I have never updated a device via OTA, i think you can still receive the OTA update, but will most likely have to root your device again.
Dark3n said:
What counts as easy depends on what you find easy ;-).
I prefer flashing through recovery mode.
Sometimes it is not possible to flash it through recovery and you need odin/heimdall for certain steps (i.e. when your recovery does not allow flashing of unsigned files and you need to flash a custom recovery like CWM).
It is also easier to brick your device by ticking the wrong box in odin/heimdall ;-).
I have never updated a device via OTA, i think you can still receive the OTA update, but will most likely have to root your device again.
Click to expand...
Click to collapse
Vielen Danke
I am on stock 4.0.4 with a locked bootloader. I want to have root with the stock rom, nothing else just root.
So I am gonna use the tool provided here,
http://forum.xda-developers.com/showthread.php?t=1544940
I have already installed drivers and have the tool downloaded.
Then I would like to flash the stock google 4.0.4 rom that will let me receive OTA updates. Is this the right file?
http://forum.xda-developers.com/showthread.php?t=1569509
Or can I just flash the stock rom from here?
http://forum.xda-developers.com/showthread.php?t=1572307
I heard there are problems flashing stock rom with CWR if the stock recovery isnt removed? Thats why I dont know if I should flash the stock image.
Is the process of flashing rom with CWR recovery the same as with stock recovery?
My phone is the i9023.
Thanks a bunch in advance.
Gambler_3 said:
I am on stock 4.0.4 with a locked bootloader. I want to have root with the stock rom, nothing else just root.
So I am gonna use the tool provided here,
http://forum.xda-developers.com/showthread.php?t=1544940
I have already installed drivers and have the tool downloaded.
Then I would like to flash the stock google 4.0.4 rom that will let me receive OTA updates. Is this the right file?
http://forum.xda-developers.com/showthread.php?t=1569509
Or can I just flash the stock rom from here?
http://forum.xda-developers.com/showthread.php?t=1572307
Is the process of flashing rom with CWM recovery the same as with stock recovery?
Thanks in advance.
Click to expand...
Click to collapse
Baseband version? under about phone
billchen0014 said:
baseband version? Under about phone
Click to expand...
Click to collapse
i9023xxki1.
Sorry should have specified my phone in the OP.
Best way is to do it manually. You can find all of the steps required here. The only difference is that you should be flashing the latest recovery from here and the latest superuser.zip file when flashing with recovery.
Note, unlocking bootloader will cause loss of EVERYTHING on the device that you have put on there (sdcard, apps, data partition, etc).
Harbb said:
Best way is to do it manually. You can find all of the steps required here. The only difference is that you should be flashing the latest recovery from here and the latest superuser.zip file when flashing with recovery.
Note, unlocking bootloader will cause loss of EVERYTHING on the device that you have put on there (sdcard, apps, data partition, etc).
Click to expand...
Click to collapse
You suppose thats better to do manually so I will have latest version of recovery and superuser?
And yes I am aware of the data loss waited sometime to finish all my games now I am ready to lose all my app data.
Harbb said:
Best way is to do it manually. You can find all of the steps required here. The only difference is that you should be flashing the latest recovery from here and the latest superuser.zip file when flashing with recovery.
Note, unlocking bootloader will cause loss of EVERYTHING on the device that you have put on there (sdcard, apps, data partition, etc).
Click to expand...
Click to collapse
Do it this way. The one click is fine but using Android SDK and going through all that will help you in the long run. This way you know the process in case something goes wrong. It may be confusing at first but worth it. It will teach you a lot more than flashing a one click!
I learnt a lot from this and feel much more experienced and capable because of it. I know I will be able to solve any major issues using Android Debug Bridge (adb).
Okay then I am gonna try the manual way and gonna take out time for it. Now I just need to know what do I flash once I have unlocked bootloader and installed CWR?
I just want the stock google rom and receive OTA if nexus S continues to be supported by google.
You won't need to reinstall the ROM if you are currently on 4.0.4. The ROM stays there as-is. Feel free to do your wipes in recovery and reflash stock 4.0.4 through CWM if you must. You flash CWM to your phone and then superuser through CWM.
Steps:
Setup ADB/fastboot
Bootloader --> fastboot oem unlock --> agree
Bootloader --> fastboot flash recovery recovery.img --> this will give you CWM
Recovery --> flash superuser.zip and, if you must, wipe and reflash ICS (flash su AFTER this if done)
Reboot --> bingo
Also note, with stock ROMs it will replace your current recovery with stock recovery on each boot. If you want to keep CWM, delete /system/etc/flash-recovery.sh when you first boot. You'll have to reflash recovery afterward and it will stick.
Oh I was of the impression that unlocking bootloader wipes everything means it wipes the OS as well. That is nice if it's just data and not the OS, dont think I would reflash it if it's not needed.
Can you explain what you mean by will have to reflash recovery? I will have to do that even if I delete that file on first boot? And whats the drawback if I dont delete that file and stick with stock recovery?
As soon as you boot into stock android it will replace the recovery. So if that file is there on first boot, it will replace it while booting and you will be without CWM (stock instead). After first boot you can delete the file (you can reflash a ROM which has this deleted, or delete it yourself from a stock ROM, or even use adb or a recovery-based file manager to delete the file, then you won't have this problem at all) and it will no longer reflash stock recovery, but you would already have the stock one and need to flash CWM one more time to get it to stick. Easiest way is to just flash CWM and delete it within android imo, saves mounting commands and the such.
No downside really. If you need to flash something for one reason or another you'll just have to reflash CWM before you do so. Once rooted, ROM Manager can do this for you within android anyway.
I had already downloaded and installed the drivers from the one click root thread and my computer shows the android adb thing when I connect my phone with USB debugging.
But as you guys suggested I am gonna do the manual way. So do I just skip the installing driver on computer in the part 1 of this guide?
http://forum.xda-developers.com/showthread.php?t=1007782
In my bootloader menu why is it showing my phone as an i9020?? Is it normal?
Gambler_3 said:
In my bootloader menu why is it showing my phone as an i9020?? Is it normal?
Click to expand...
Click to collapse
Because you have a Nexus S with amoled. That's the i9020. The i9023 is SLCD.
DeuXGod said:
Because you have a Nexus S with amoled. That's the i9020. The i9023 is SLCD.
Click to expand...
Click to collapse
He has the i9023 to my knowledge. It is completely normal, though. Bootloader and recovery for i9020 and i9023 series are the same, this can be attributed to the issue with 4.0.3 recovery backlight not turning on.
If fastboot recognises your phone in the bootloader (the fastboot menu), your drivers are installed an working perfectly.
Finally got to the unlock bootloader screen, didnt do it just yet but now I know how to do it.
I must say the guide is a bit outdated, the software has changed quite a bit seems. The most frustrating part was that the fastboot file is actually in the platform tools folder instead of the tools folder which I didnt figure for a while. I will hold off rooting when I have a whole day off because once I lose everything I would be very anxious to get my phone back to normal which will take time.
Thanks for the help harbb, if I have any problem flashing recovery and superuser I will come back for more help.
And yes I have the LCD version i9023.
Btw the guide said the fastboot will be in the tools folder but the tools folder had a read me that "adb has moved to the platform tools folder" this is how I figured to go to that folder and thats where the fastboot file actually was.
Now it says I should put the recovery image in the tools folder so should I do that or put it in the platform tools folder?
In the instructions for the flashing recovery I am not understanding one thing.
6 - Then back on the SNS select Power Off (Reboot also works)
Part 4 - Root
1 - Power ON the SNS
So after flashing recovery I have to reboot? Since I am on stock rom that would bring back the stock recovery so how would I flash superuser then?
If I delete the stock recovery can I still get OTA updates?
fastboot and adb is now in platform tools, that is correct. Easiest way is to put your recovery in there too so you don't have to type in the absolute file path to it, don't put it in tools.
Don't power off or reboot the phone. After you flash recovery go straight into the recovery menu and root, flash custom ROMs, kernels, etc. You can transfer files to flash via the mounts and storage --> mount usb storage menu. After this feel free to reboot.
Harbb said:
fastboot and adb is now in platform tools, that is correct. Easiest way is to put your recovery in there too so you don't have to type in the absolute file path to it, don't put it in tools.
Don't power off or reboot the phone. After you flash recovery go straight into the recovery menu and root, flash custom ROMs, kernels, etc. You can transfer files to flash via the mounts and storage --> mount usb storage menu. After this feel free to reboot.
Click to expand...
Click to collapse
Just wanted to update that I successfully unlocked and rooted. Thanks a bunch mate.
Gambler_3 said:
Just wanted to update that I successfully unlocked and rooted. Thanks a bunch mate.
Click to expand...
Click to collapse
Good work, been wandering what you were up to on this
Hope you enjoy the possibilities.
Hello everyone
I've rooted my tf300t with cwm recovery (installed "root-signed.zip" from boot-menu).
The tablet had stock rom version .17 before i rooted, and still has.
Now, in the lower right corner, there is a notification that says that a firmwareupdate is ready to be installed. Will it be wise to install?
I've read that many loses root if they update, so i don't know what to
do... Is it better to download the update-file from asus.com and install it manually?
Download and install ota rootkeeper from the play store. Make sure you backup your root correctly with this before you proceed with the update. After the update, open up rootkeeper and restore root.
I hope I'm correct but I believe if you installed CWM the update will never work because the stock recovery will find the update and apply it automatically, but CWM won't. So you'll download the update, it'll reboot but never apply. In http://forum.xda-developers.com/showthread.php?t=1714727&page=10 someone seems to have a link to a ZIP you can apply. But you need to re-install CWM and root though.
psjw12 said:
I hope I'm correct but I believe if you installed CWM the update will never work because the stock recovery will find the update and apply it automatically, but CWM won't. So you'll download the update, it'll reboot but never apply. In http://forum.xda-developers.com/showthread.php?t=1714727&page=10 someone seems to have a link to a ZIP you can apply. But you need to re-install CWM and root though.
Click to expand...
Click to collapse
Actually, that is correct. OTA updates will only work with stock recovery. If you have CWM recovery, OTA won't work. You will have to manually install the update.
But I thought that I had to have stock .17 to root?
If I update to a newer version, will I still be able to root?
Not anymore...check out the develpment section to read up on the latest root methods for the latest firmware.
Yup, I side loaded the .30 update with CWM then I no longer had root and I no longer had CM recovery. All is good with my official update installed though, despite being unlocked. So I am happily working to re-install CM recovery and then re-root. It's an orderly procedure, so I will get started on that next.
Done and done.
So follow the ClockworkMod instructions if you are unlocked. You simply repeat the steps to install the CM recovery and then use the CWM just installed to root again. All is well.
Asus may or may not have patched the Sym-linking exploit Wolf first found.
You can attempt running his exploit to root the new firmware, but this is only if you were unwilling to unlock your bootloader, if it's unlocked you can just use CWM.
The 9.2.2.6 patch apparently broke OTA rootkeeper for the TF101G, so take care.
Thank you so much for good support guys!
The tab is unlocked (if not, it had not been possible to install cwm recovery)
I've now downloaded the .30 update zip from asus.com, which brings me to my next question, how do I install it manually?
I've unziped the file once and placed it in the root dir on the sd-card and rebooted.
A triangle appeard in the notification bar. Pressed it, and it rebooted again automatically. But but this time it booted into cwm recovery...(?) From here i pressed "Install zip from sd-card" and then "Choose zip from sdcard" but it seems like my sd-card cannot be found.
I only have the option to choose from internal storage. Should I have placed the firmware update in internal storage instead?
Yes. Neither recovery has support for an external SD card right now. You must use internal storage.
But should I run te update through cwm recovery?
If you make it a CWM flashable .zip you can do that, or if your CWM supports OTA updates, (extract the .zip once, inside should be another .zip, this is what you flash in CWM)
Or you could manually flash through the staging partition using adb or terminal emulator, this would support ext SD.
Code:
su (Grant root Permissions)
dd if=/sdcard/blob of=/dev/block/mmcblk0p4
(or /Removable/MicroSD/Blob, wherever you put it)
reboot
mmcblk0p4 is the staging partition for the TF101, if it is the same use that for the TF300t, but I'm not 100% sure till I look at a partition table listing, it's probably 0p4 though.
To install the .30 update you have to have Downloaded it from somewhere - like ASUS.
It needs to be unzipped from it's original to the standard update file name ex: US_epad-user-9.4.3.30.zip This apparently still "zipped" file is the only file contained inside the one that I downloaded. This file must be placed on the root of the sdcard (internal Storage) of the tf300. You reboot into CM recovery and instruct it to update from sdcard where this file is to be found. This is what I meant in a previous post by "sideloading". You are essentially manually installing this update. The tf300 will behave as if you have installed this update normally i.e OTA and reboot to install itself. Once this update is installed it overwrites the ability to use CM recovery and your tf300 is also no longer rooted - so you have to do that all over again. Your tf300 however remains with it's bootloader unlocked so this is the method that we use instead of "Over The Air" updates. The procedure to continue to re-install CM recovery and to root it is in another post:
Transformer tf300t Android Development : [CWM][5.5.0.4] ClockworkMod Recovery for TF300T + ROOT
Hope I have made things more clear,
Cheers!
kjwaugh said:
To install the .30 update you have to have Downloaded it from somewhere - like ASUS.
It needs to be unzipped from it's original to the standard update file name ex: US_epad-user-9.4.3.30.zip This apparently still "zipped" file is the only file contained inside the one that I downloaded. This file must be placed on the root of the sdcard (internal Storage) of the tf300. You reboot into CM recovery and instruct it to update from sdcard where this file is to be found. This is what I meant in a previous post by "sideloading". You are essentially manually installing this update. The tf300 will behave as if you have installed this update normally i.e OTA and reboot to install itself. Once this update is installed it overwrites the ability to use CM recovery and your tf300 is also no longer rooted - so you have to do that all over again. Your tf300 however remains with it's bootloader unlocked so this is the method that we use instead of "Over The Air" updates. The procedure to continue to re-install CM recovery and to root it is in another post:
Transformer tf300t Android Development : [CWM][5.5.0.4] ClockworkMod Recovery for TF300T + ROOT
Hope I have made things more clear,
Cheers!
Click to expand...
Click to collapse
Wow! Thank you sooo much for taking it step by step
I tried it, and it went very well! :victory:
But one last thing; there is still a update-reminder in the notification-bar
This is the same notification that have been there since the first time I connected to the internet, before rooting and all that.
When I press the notification, all I can choose is "postpone" or "install update"...
A re-boot should clear that up.
Nope, I've rebooted several times already, but it's still there...
pogman99 said:
Nope, I've rebooted several times already, but it's still there...
Click to expand...
Click to collapse
Try to clear your cache and reboot.
And don't forget that you have an Index for the TF300 in the Dev Forum for help you or download
philos64 said:
Try to clear your cache and reboot.
And don't forget that you have an Index for the TF300 in the Dev Forum for help you or download
Click to expand...
Click to collapse
Have done that too. Booted the tab by pressing power+volume down and it started a "cold boot". Maybe there's another way also? I have cwm recovery btw...
Hi guys,
My tablet is rooted (and back to fully stock ROM from Acer's website). I updated OTA just a moment ago, and I was totally shocked to see the message "Booting kernal recovery image - Recovery verified failed..."
I tried rebooting, fastbooting,....they all don't work. How should I move on? What can be done now?
Please do help me. I need the tablet, and never knew such a situation could arise.
Thanks!
Sounds like your device's bootloader is locked again. Just perform a fastboot oem unlock and see whether that fixes your problem. Worked for me.
/edit: Which, of course, assumes you're able to get into fastboot. You should be able to get in using adb... what do you mean by "they all don't work"?
got the same problem. how do you get into fastboot again?
Liquidator said:
Sounds like your device's bootloader is locked again. Just perform a fastboot oem unlock and see whether that fixes your problem. Worked for me.
/edit: Which, of course, assumes you're able to get into fastboot. You should be able to get in using adb... what do you mean by "they all don't work"?
Click to expand...
Click to collapse
I assume yes, it is locked since I went back to a fully Stock ROM (which includes the locked bootloader?). But what has a bootloader got to do with an OTA update?
What I mean by they all don't work is that, even when I try shutting down, rebooting or enter stock recovery using the volume keys + power button, nothing works. Absolutely nothing! The screen just stays there.
I then thought, let the battery run down and maybe I can enter stock recovery and flash the zip for the stock ROM again from my SD card, but this doesn't work. The tablet just boots again to that same screen, with a message saying wiping off update cache and something to do with cdm.
I fear my device is gone. If anyone can lead me to getting back my device up and running, as a small token of appreciation, I will provide you with either $10 via PayPal or a $10 Google Play Gift Card code. This is really important for me, and I can't seem to find any help on this matter on the Internet.
I tried to update to JB, by flashing a stock rom through CWM. But then I try to get into the recovery I get hte same message. For me, if i dont try to get into the recovery it repeats an animation of the Acer logo and it never ends. I believe ill have to give it to the acer support. I also cant get into the stock recovery, so we pretty much have the same problem.
Temporeiches said:
I tried to update to JB, by flashing a stock rom through CWM. But then I try to get into the recovery I get hte same message. For me, if i dont try to get into the recovery it repeats an animation of the Acer logo and it never ends. I believe ill have to give it to the acer support. I also cant get into the stock recovery, so we pretty much have the same problem.
Click to expand...
Click to collapse
No, we don't have a same problem. I don't have CWM on my device, and I am doing an OTA. I can do absolutely NOTHING other than stare at the error message in red ink and the static Acer logo.
Okay sorry. Just want to tell you that I flashed the stock rom and so I lost CWM. If i find a way to fix mine ill tell you and it might help you.
As an update, after letting the tablets battery drain out and then charging it back up, the message I am seeing now is a little longer:
Erasing cache before SD update...
SD Update cmd: recovery
--Update_package=sdcard:update.zip
Booting recovery kernal image
Recovery verified failed...
PS: If anyone can make sense of this message, please tell me.
If I recall correctly, the stock recovery has no user interface whatsoever. All it does is offer to flash a signed update.zip from the external SD card.
I have/had CWM installed, and got the "Recovery verified failed..." message after flashing JB as well. Thing is, it appears Acer is not only flashing the system, but also a new bootloader (which explains the new key-press combos necessary to get into recovery). Why it's not working for you on a stock device I am unable to tell, but something may have gone wrong during your update.
So, suggestion: Place the update.zip from Acer on a microSD and see what happens. With any luck, it'll just flash the system contained within the zip again and it'll work.
Liquidator said:
If I recall correctly, the stock recovery has no user interface whatsoever. All it does is offer to flash a signed update.zip from the external SD card.
I have/had CWM installed, and got the "Recovery verified failed..." message after flashing JB as well. Thing is, it appears Acer is not only flashing the system, but also a new bootloader (which explains the new key-press combos necessary to get into recovery). Why it's not working for you on a stock device I am unable to tell, but something may have gone wrong during your update.
So, suggestion: Place the update.zip from Acer on a microSD and see what happens. With any luck, it'll just flash the system contained within the zip again and it'll work.
Click to expand...
Click to collapse
So how do I get this latest firmware? I can't find on acers website.
himmatsj said:
So how do I get this latest firmware? I can't find on acers website.
Click to expand...
Click to collapse
http://global-download.acer.com/Step5.aspx?Step1=Tablet&Step2=ICONIA%20TAB&Step3=A510&BC=Acer&SC=&LC=en&OS=a09&FS=O02&Category=OS
Change the Language and download the largest file (thats stock ICS) best is the RV28.RC02.WW.GEN1 so later you can retry an update
Temporeiches said:
http://global-download.acer.com/Step5.aspx?Step1=Tablet&Step2=ICONIA%20TAB&Step3=A510&BC=Acer&SC=&LC=en&OS=a09&FS=O02&Category=OS
Change the Language and download the largest file (thats stock ICS) best is the RV28.RC02.WW.GEN1 so later you can retry an update
Click to expand...
Click to collapse
Did the update fail because I already had the previous Acer firmware version as update.zip on my ext sd card? The tab is friggin useless as things stand!!
himmatsj said:
Did the update fail because I already had the previous Acer firmware version as update.zip on my ext sd card? The tab is friggin useless as things stand!!
Click to expand...
Click to collapse
Try this:
Here's how to get into fastboot (bootloader) manually:
Turn off your tablet
Hold the Volume Down (**) button and press the Power button
As soon as the tablet vibrates, let go of only the Power button (keep the Volume Down (**) button pressed) and immediately start switching the Screen Rotation Lock slider back and forth.
If this works continue.Connect your device to PC. Open your device manager look for fastboot under other devices and right click on it and select update driver. Then click browse my computer for driver software and locate the folder i could send by mail, just ask me. Click Next, and it might say it is a threat, but click continue (its safe as I edited it myself) and let it install. Next download http://forum.xda-developers.com/showthread.php?t=1661324 and use it to unlock bootloader. Next follow instructions on http://forum.xda-developers.com/showthread.php?t=1866378 Then place a ROM from NoThrills on an external sdcard, and insert it into the tablet. If the tablet is shut down get into CWM through the key combination for ICS bootloader power and ** sound button and for JB bootloader
* PowerON+Vol-
* At the first vibration release PowerOn, keeping Vol- pressed
* At the second vibration release Vol- and press Vol+
Next flash the rom from external sdcard and reboot. Now things should work.
Guys, can anyone help me understand, why when I do an OTA on a fully stock ROM (no bootloader unlocked, no custom recovery, no custom ROM and no root), do I get the message I mention earlier? (that is: Booting recovery kernel image, Recovery verified failed...)
Mind you, I did go to a custom ROM once, which was No Thrills A700 Fraken ROM for the A510. Could that be an issue here?
Please, just help me understand why I am continuously getting this error when I do an OTA. If you can successfully explain to me, I owe you $10 (PayPal or Google Play Gift Code).
Thanks!
PS: I am not looking for a solution (don't tell me flash this and that, I've done all that). I am merely looking for an explanantion as to why the above happens.
himmatsj said:
Guys, can anyone help me understand, why when I do an OTA on a fully stock ROM (no bootloader unlocked, no custom recovery, no custom ROM and no root), do I get the message I mention earlier? (that is: Booting recovery kernel image, Recovery verified failed...)
Mind you, I did go to a custom ROM once, which was No Thrills A700 Fraken ROM for the A510. Could that be an issue here?
Please, just help me understand why I am continuously getting this error when I do an OTA. If you can successfully explain to me, I owe you $10 (PayPal or Google Play Gift Code).
Thanks!
PS: I am not looking for a solution (don't tell me flash this and that, I've done all that). I am merely looking for an explanantion as to why the above happens.
Click to expand...
Click to collapse
it likely happend due to you rooting and flashing a non stock kernel.
when you apply the update off acers website after having it cwm and a customer rom i don't believe it will replace the recovery properly.
this is becasue the files on acers sites are updates and not full roms.
this is the reason why i did not do it to mine.
don't quote me on it but i had a similar issue with an old phone and ended up stuck on customer roms after that.
malos1984 said:
it likely happend due to you rooting and flashing a non stock kernel.
when you apply the update off acers website after having it cwm and a customer rom i don't believe it will replace the recovery properly.
this is becasue the files on acers sites are updates and not full roms.
this is the reason why i did not do it to mine.
don't quote me on it but i had a similar issue with an old phone and ended up stuck on customer roms after that.
Click to expand...
Click to collapse
You mean when I flashed the A700 Franken ROM by NoThrills, that had a non-stock kernel?
If so, what can I do to get back stock kernel on my tablet? There has to be some way, right?
PS: I flashed the official files from Acer via the update.zip file from their website. From here: http://forum.xda-developers.com/showthread.php?t=1897791
PSS: I checked, and I *think* you are wrong because by flashing the files from Acer's website I am back to the stock kernel. Version number: 2.6.39.4+ (Correct me if I am wrong to assume as such)
himmatsj said:
You mean when I flashed the A700 Franken ROM by NoThrills, that had a non-stock kernel?
If so, what can I do to get back stock kernel on my tablet? There has to be some way, right?
PS: I flashed the official files from Acer via the update.zip file from their website. From here: http://forum.xda-developers.com/showthread.php?t=1897791
PSS: I checked, and I *think* you are wrong because by flashing the files from Acer's website I am back to the stock kernel. Version number: 2.6.39.4+ (Correct me if I am wrong to assume as such)
Click to expand...
Click to collapse
yes but i don't think those update.zip's restore the recovery partitions correctly. They seem to only restore the stock rom and nothing else?
Nothrills may be able to clarify that though. i don't know too much about how these roms work.
malos1984 said:
yes but i don't think those update.zip's restore the recovery partitions correctly. They seem to only restore the stock rom and nothing else?
Nothrills may be able to clarify that though. i don't know too much about how these roms work.
Click to expand...
Click to collapse
Yeah, I hope someone who is directly involved in these things like NoThrills can come and enlighten us.
Thread moved to Q&A
MD
Problem SOLVED!
Hi guys,
For all those having the "recovery verification failed" error while trying to do OTA, I know the fix!
The key is, you need to restore stock recovery manually. There's a zip file of the stock recovery here (at the bottom of the first post). Just restore stock recovery as per usual.
Steps to follow in brief:
1) Install stock recovery manually from HERE
2) If your's isn't the stock Acer ROM, download the correct ICS version for your region from HERE (place it as update.zip and follow steps as per normal to flash)
3) Go to settings>apps>all apps>systemupdater, and then clear data/cache.
4) Reboot tablet and you should get an OTA notification.
5) You're done!
Hello everyone!
I'm hoping to get a little bit of guidance from the members here regarding my TF300T. Last week I started down the road to unlocking my TF300 and honestly, I am finding it painfully slow to use. I also have a Samsung Note 2 and find it just blazing fast compared to my TF300. I read a little bit online and having tried a "Factory Rest" etc. I found it still lagged at key entry, browsing etc.
I successfully unlocked my TF300 and then installed CWM. I think however, that the guide I was following was a little outdated (?) because when I went looking for a new ROM to install, most posts STRONGLY recommended TWRP. So my first question is:
If I follow the instructions here:
h t t p : / / teamw.in/project/twrp2/97
using, openrecovery-twrp-2.5.0.0-tf300t-JB.blob specifically, will TWRP automatically install over CWM (on the bootloader partition I believe)? My research and gut is telling me "yes", but I'm hesitant to do this without some additional confirmation.
As a side note, my TF300 currently has Android version 4.1.1 installed. Build: WW_epad-10.4.2.20-20121228.
On another note, I tried to update to Android 4.2 by downloading : TF300T-WW_epad-10_6_1_15_3-UpdateLauncher.zip from the ASUS Website. I extracted the file : WW_epad-user-10.6.1.15.3.zip onto the root of my SDCard, put the card into my TF300. From what I read online, the TF300 was supposed to recognize the file (which it did and I clicked "Install update"). The TF300 rebooted it booted directly into CWM and I received the following error at the bottom of the screen:
E:Invalid command argument
I'm not sure why that error came up, the only thing I can think of is because I have CWM installed?? Can I use CWM to "install zip from sdcard" and would it install Android 4.2? Or if I can successfully install TWRP, can I then use it, to install the 4.2 update? If I do, then would I have to then immediately install openrecovery-twrp-2.5.0.0-tf300t-4.2.blob as I've upgraded to Android 4.2?
Thanks everyone for your help!!!
ACaton said:
Hello everyone!
I'm hoping to get a little bit of guidance from the members here regarding my TF300T. Last week I started down the road to unlocking my TF300 and honestly, I am finding it painfully slow to use. I also have a Samsung Note 2 and find it just blazing fast compared to my TF300. I read a little bit online and having tried a "Factory Rest" etc. I found it still lagged at key entry, browsing etc.
I successfully unlocked my TF300 and then installed CWM. I think however, that the guide I was following was a little outdated (?) because when I went looking for a new ROM to install, most posts STRONGLY recommended TWRP. So my first question is:
If I follow the instructions here:
h t t p : / / teamw.in/project/twrp2/97
using, openrecovery-twrp-2.5.0.0-tf300t-JB.blob specifically, will TWRP automatically install over CWM (on the bootloader partition I believe)? My research and gut is telling me "yes", but I'm hesitant to do this without some additional confirmation.
As a side note, my TF300 currently has Android version 4.1.1 installed. Build: WW_epad-10.4.2.20-20121228.
On another note, I tried to update to Android 4.2 by downloading : TF300T-WW_epad-10_6_1_15_3-UpdateLauncher.zip from the ASUS Website. I extracted the file : WW_epad-user-10.6.1.15.3.zip onto the root of my SDCard, put the card into my TF300. From what I read online, the TF300 was supposed to recognize the file (which it did and I clicked "Install update"). The TF300 rebooted it booted directly into CWM and I received the following error at the bottom of the screen:
E:Invalid command argument
I'm not sure why that error came up, the only thing I can think of is because I have CWM installed?? Can I use CWM to "install zip from sdcard" and would it install Android 4.2? Or if I can successfully install TWRP, can I then use it, to install the 4.2 update? If I do, then would I have to then immediately install openrecovery-twrp-2.5.0.0-tf300t-4.2.blob as I've upgraded to Android 4.2?
Thanks everyone for your help!!!
Click to expand...
Click to collapse
Flashing official rom will automatically overwrite your recovery. In other words, your custom recovery will be gone. Do it with fastboot commands instead of SD Card. If you upgrade to 4.2 (10.6.xxx), you'd need to flash the 4.2 custom recovery again.
If you have CWM, the device doesn't detect the official rom automatically when you select RCK. Flash 4.1 official without custom recovery if you want that to happen.
Once on 4.2 bootloader, you'd have to use either TWRP or the CMW version in the flatline (NV Flash) img. No other CWM works. CMW Flatline installs custom roms ok, but does not back up well, if at all. Which leaves you with TWRP as the only viable alternative. I'd suggest you create the NVflash files first, then install TWRP 4.2.
After that, you can flash any 4.2 or 4.3 custom roms.
graphdarnell said:
Flashing official rom will automatically overwrite your recovery. In other words, your custom recovery will be gone. Do it with fastboot commands instead of SD Card. If you upgrade to 4.2 (10.6.xxx), you'd need to flash the 4.2 custom recovery again.
If you have CWM, the device doesn't detect the official rom automatically when you select RCK. Flash 4.1 official without custom recovery if you want that to happen.
Once on 4.2 bootloader, you'd have to use either TWRP or the CMW version in the flatline (NV Flash) img. No other CWM works. CMW Flatline installs custom roms ok, but does not back up well, if at all. Which leaves you with TWRP as the only viable alternative. I'd suggest you create the NVflash files first, then install TWRP 4.2.
After that, you can flash any 4.2 or 4.3 custom roms.
Click to expand...
Click to collapse
Ok, so to clarify, if I want to flash the official rom from Asus to upgrade from Android 4.1 to 4.2 then I should use fastboot instead of trying via the SD Card. In the process however, it will overwrite CWM (the custom recovery) correct?
Where would I find the instructions on how to use fastboot to install the official rom? I know it would be from the command line, but what exactly would the command be?
Once I've installed the official Asus 4.2 rom, then I can install TWRP correct?
Thanks
There is a useful script. Actual command is
Code:
fastboot -i 0x0b05 flash staging blob
It will overwrite CWM with stock recovery so You may like to install custom one. But be sure that it suitable for 4.2 bootloader.
Graiden05 said:
There is a useful script. Actual command is
Code:
fastboot -i 0x0b05 flash staging blob
It will overwrite CWM with stock recovery so You may like to install custom one. But be sure that it suitable for 4.2 bootloader.
Click to expand...
Click to collapse
Thanks!!
For my own edification, the command from what I can interpret is:
fastboot - the program
-i 0x0b05 - the USB identification
flash - command to flash (as opposed to say reboot)
staging - this I'm not sure of ... staging because it's a new rom that's going to be installed. Curious why it wouldn't be system, as aren't I installing a new system rom?
blog - the blob file I want flashed.
Correct?
Yes. As I understand this, staging - partition used to store something that going to be flashed. Blob from stock firmware contain data for bootloader, recovery, boot, system partitions. Here full description of fastboot command.
I want to update my android too.
I have twrp installed but I want install official rom.
I'll use fastboot (After read some threads, including this) but I have some doubts:
the blob to use is from WW_epad-user-10.6.2.6.zip with 782MB ?
nbranquinho said:
I want to update my android too.
I have twrp installed but I want install official rom.
I'll use fastboot (After read some threads, including this) but I have some doubts:
the blob to use is from WW_epad-user-10.6.2.6.zip with 782MB ?
Click to expand...
Click to collapse
Hey there. Here is my experience with doing what was mentioned in this thread.
I had CWM installed. I downloaded the official Asus stock ROM and followed the fastboot instructions above. The official ROM over wrote everything. Took about ... maybe 5 minutes total. The new official ROM worked like a charm.
I then reinstalled TWRP. No issues. I used TWRP to install Cromi-X, which is awesome. Also, no problems.
The only thing I found weird, is that I had cleared all cache etc. and I thought I had deleted all my data by doing so, but everything on my "Internal SD Card" was there even after I installed a fresh copy of Cromi-X.
As for what blob you should use (and I'm STILL A NEWB) I'm pretty sure you need to match the blob to the type of tablet you have. If you go into : Settings --> About Tablet --> Kernel version, (pretty sure that's the right spot) you should see something like "WW_epad" or "US_epad".
Over all, this was one of the most simple "tech" processes I've ever experienced.
ACaton said:
Hey there. Here is my experience with doing what was mentioned in this thread.
I had CWM installed. I downloaded the official Asus stock ROM and followed the fastboot instructions above. The official ROM over wrote everything. Took about ... maybe 5 minutes total. The new official ROM worked like a charm.
I then reinstalled TWRP. No issues. I used TWRP to install Cromi-X, which is awesome. Also, no problems.
The only thing I found weird, is that I had cleared all cache etc. and I thought I had deleted all my data by doing so, but everything on my "Internal SD Card" was there even after I installed a fresh copy of Cromi-X.
As for what blob you should use (and I'm STILL A NEWB) I'm pretty sure you need to match the blob to the type of tablet you have. If you go into : Settings --> About Tablet --> Kernel version, (pretty sure that's the right spot) you should see something like "WW_epad" or "US_epad".
Over all, this was one of the most simple "tech" processes I've ever experienced.
Click to expand...
Click to collapse
Thx for the alert, I already have the correct blob for my tablet.
The process work fine and now I have the JB installed on my Tablet!
Thx.