Flashed stock recovery and thought I soft bricked my shield tablet. - Shield Tablet Q&A, Help & Troubleshooting

First I'll give credit where it is due. From two threads on this site is where I got help with this issue:
I followed THIS guys steps for manually erasing and got the recovery images and lots of other useful information from HERE. Thank you guys very much!
OK, so, hopefully I can help someone with my little story as well. I was having issues with apps and programs crashing on me with lollipop and the new marshmallow update. The tablet just wasn't working properly and moving slow. I even had the SD card holding all my apps and larger files so I didn't overload the internal storage. So, I decided I wanted to flash back to factory/stock recovery and go from there. I did this using THIS method. I flashed via the "flash-all.bat" file (the command in fastboot is the same as the file name). I should note that there was one instance that failed during the install (I did try it again and got the same failure). Said something about “did you mean you wanted to flash this partition” or something, then showed it failed. After flashing I hit continue on the bootloader screen of the tablet and it said it was "cold booting." After about 5 minutes or so it started to boot but never made it past the NVidia screen. I tried wiping the phone with factory reset, wiping the cache, etc. and then re-flashing the recovery (again with the .bat file). I tried flashing TWRP but it didn't install apparently, because it still went to factory recovery. I even re-locked and then unlocked my bootloader to see if that would set everything straight. Nothing seemed to work. I knew I would eventually find a solution though so I kept looking. Stumbled on some other people that had the same issues but no solution (hope those people got it figured out). So here's what I did after some more research:
First, if you're in this situation and you did factory reset to try and resolve the problem, you may feel like you can no longer communicate with the device via fastboot/adb, but as long as you have the usb drive and your SDK tools installed (I used CodeWorks for Android all-in-one program) that shouldn't be a problem. You'll just have to be in the bootloader on the tablet.
-If for some reason you deleted or uninstalled your drivers and tools you'll have to download them again and then, the computer should still be able to communicate with the tablet. In the device manager under portable devices it will still show up as Module something or other. So the computer still sees the device but doesn't fully recognize it yet. Don't worry, this should still work! Just make sure you that fastboot is seeing the device by inputting "fastboot devices" in the command window and a 14 digit serial number should pop up. If it just says "list of devices" or there's nothing then you wont be communicating with the tablet.
Your device should be connected to your computer and started in bootloader mode. On your computer you should have the command prompt for adb/fastboot open. I just go to the folder where the .exe files are located and hold shift and right click in the white space of the folder, then select "open command window here."
From here follow the erase steps: stolen from manigault! :highfive:
fastboot erase system
fastboot erase userdata
fastboot erase boot
fastboot erase recovery
fastboot erase cache
Then flash your recovery MANUALLY:
fastboot flash recovery {dir}/recovery.img
fastboot flash boot {dir}/boot.img
fastboot flash system {dir}/system.img
fastboot flash userdata {dir}/userdata.img
fastboot flash staging {dir}/blob
fastboot flash dtb {dir}/tegra124-tn8-p1761-1270-a04-e-battery.dtb
You can download whatever recovery version you wish. I downloaded 2.2.2 because that's what my device came with out of the box on Christmas 2014. It will more then likely be a .zip file. To make this whole process a little easier simply extract the files in the .zip file where the adb.exe and fastboot.exe files are located (folder should be named platform-tools) and you can completely eliminate typing the whole directory before the file name. ***After your done flashing everything you can go back and delete those files if you want. Just double check that you're deleting the right files by looking at the original zip file. Not sure if it makes a difference but I deleted them anyway.
For example the commands in fastboot will look like this exactly :
(after extracting recovery files into platform-tools folder)
fastboot flash recovery recovery.img
fastboot flash boot boot.img
fastboot flash system system.img
fastboot flash userdata userdata.img
fastboot flash staging blob
fastboot flash dtb tegra124-tn8-p1761-1270-a04-e-battery.dtb
Note: Do NOT use the flash-all.bat command as this doesn't seem to work for this situation. Do it manually like shown above. And let each individual process complete before attempting to input another command.
After this step I didn't select continue on the bootloader. You can either select reboot or simply input "fastboot reboot" into the command window. It may take about 5 minutes to start installing everything but just be patient, it should start. Sometimes with these things you have to do things twice before it works. If for some reason it doesn't work the first time then start from the beginning and try it again. It took two times for me, but that's because I installed system.img twice and was getting double screen. Newb error... and I was a bit inebriated last night when I did this.
Hope this helps someone!
Thanks again to manigault and MidgetMob!
NVIDIA download files HERE!

i think i done the same thing
but the problem i now have is i cnt get tablet into fastboot on pc. i can load fastboot on tablet with power and volume down , but the tablet only shows as MTP device in device manager. i have downloaded drivers from nvidia and no matter what i try i cant install them i have been through all instructions but scince it went to mtp device i cant get device showing in adb. The only way i can get device showing in adb on pc ist to select apply update from adb ! but none of these commands listed in your post will work because its in sideload. is there anyway i cn reset , flash custom rom ect bu using commands while device is in adb sideload.
all i get is now send the package you want to apply to the device with "adb sideload <filename>".....
if you could shed any light on this it would be much appreciated , thanks , lester

did you update official android 6.0 before? then, not working stock recovery, stock boot...
If you can enter bootloader mode, download unofficial twrp 3.0.0.0 (here http://forum.xda-developers.com/shield-tablet/development/wip-twrp-2-8-0-1-unofficial-t2877117) and flash it.
i have a working boot.img file on marshmallow if you want.. please reply.

Sorry for the late response! I have no clue how you got into sideload??? Are you talking about through the recovery on your device? You're not able to get adb/ fastboot to recognize the device, right? It doesn't matter how you get the tablet into the bootloader. Whenever you have the phone in the bootloader then you'll use the fastboot command to "talk to" the device; i.e. "fastboot devices" without the quotes. That command should show your device if it shows as an MTP device whenever you open your "device manager" in windows. That's the same exact situation I was in. Download the codeworks from nvidia like I linked above. Hopefully then you should be able to recognize your device through the bootloader. If not DM me and I'll try to help you.

I'm having the exact problem as Lester. Tablet boots into bootloader but won't connect to computer. So I go into recovery mode and nothing works except apply update from adb. Which brings up the side load message that Lester quoted. And bootloader is showing "device=locked". I am attempting to fix this tablet for a friend that messed it up trying to flash a custom rom. Problem is he had no idea what he was doing and I'm not exactly sure what he did. I do however have a lot of experience with rooted android devices and flashing so any help would be GREATLY APPRECIATED!
---------- Post added at 05:59 PM ---------- Previous post was at 05:55 PM ----------
Also, I've already tried flashing stock rom back onto the tablet by applying update from sd card function in the recovery but when I try to do that the tablet for some reason can't mount the sd card.

rom fiend said:
Tablet boots into bootloader but won't connect to computer.
Click to expand...
Click to collapse
If you've got the device in bootloader then you need to use fastboot, not adb. Try the command 'fastboot devices' and see if the device id is listed. If so then grab a factory image, unzip it and use fastboot to flash the .img files using the commands 'fastboot flash system system.img'. Just make sure to match the partition names to the files.

Hello i have similar issue except when i try flash something i get this error ''remote: file write failed''
and i have to reboot into fastboot to get it flashing fully
but even though i managed to flash everything by rebooting when i boot system nothing shows up, i can just see the back light coming on and turning off after a while
Please help

Related

No boot or recovery img

last night i flashed an update of clockwork mod through rom manager. i then went to do a back-up of my current rom. the phone re-booted to the fastboot mode and now says no boot or recovery img. when i scroll to recovery and click it, the phone reboots right back into the bootloader. i am trying to flash a new recovery through adb but i cant get anything to connect. when i do "adb devices" in the command prompt i get the daemon started and list of devices but there are no devices listed. "fastboot devices" does nothing either. i have the android sdk loaded onto c:\ and the drivers seem to be installed correctly. when i rooted the phone i used a different pc that i dont have access to now. i also used pdanet for the drivers so i have never had the google drivers set up correctly. i type fastboot flash recovery recovery.img and it says "cannot load recovery.img" i have downloaded the recovery-clockwork3.0.0.5-crespo.img to the "tools" folder and renamed it "recovery.img"
i have tried to explain everything i have done so far but i am sure there are some steps i have missed. i read some on odin and downloaded it but i am even more lost trying to figure that out. i really need some help here and i would appreciate anything i can get
when you're in bootloader, you're supposed to use "fastboot"
you cant flash a recovery using adb.
go into bootloader mode
fastboot devices
... if your device doesn't show up, then your drivers are not properly set up.. uninstall them and look for the sticky and reinstall your drivers using those set of instructions; assure your SDK is updated to support 2.3.X
when you get your device to appear in fastboot devices.
download clockwork recovery 3.0.2.5 (3.0.2.4 is buggy) or 3.0.0.5; 3.0.2.5 is found in dev forums; rename it to recovery.img
put it in /sdk/tools/
fastboot flash recovery recovery.img
i guess i need help getting the device connected through fastboot. i have tried 5 times now to install the drivers verbatim to what the sticky says (using W0lv3r1n3's Great Windows Rooting Guide). adb command works and pulls up the adb help text. fastboot is still unrecognized by the command prompt. adb devices nor fastboot devices works. i have no idea what else to do. most of the stickies just graze over this part and have no trouble shooting guides.
tohg2 said:
i guess i need help getting the device connected through fastboot. i have tried 5 times now to install the drivers verbatim to what the sticky says (using W0lv3r1n3's Great Windows Rooting Guide). adb command works and pulls up the adb help text. fastboot is still unrecognized by the command prompt. adb devices nor fastboot devices works. i have no idea what else to do. most of the stickies just graze over this part and have no trouble shooting guides.
Click to expand...
Click to collapse
if your device is unable to GET into bootloader mode... that wont get you anywhere.
when you plug your phone into the computer with the USB.. does that USB sound pop up? if it doesnt.. then its bricked.
ok i have fastboot devices seeing the device. but adb devices still wont see it. when i do fastboot flash recovery recovery.img it says cannot load recovery.img. i put the clockwork file in the tools folder renamed at recovery.img. do i leave it as a zip file though?
when i plug the usb in i dont hear a sound. the phone will only boot into "fastboot mode".
when i do fast boot devices i see "38328e03afbf00ec fastboot"
tohg2 said:
ok i have fastboot devices seeing the device. but adb devices still wont see it. when i do fastboot flash recovery recovery.img it says cannot load recovery.img. i put the clockwork file in the tools folder renamed at recovery.img. do i leave it as a zip file though?
Click to expand...
Click to collapse
bootloader mode is for fastboot. you wont be using ADB to recover your device.
you unzip the file. it should be like: clockwork-recovery-version..blah blah blah.img
rename it to "recovery.img" assure that your "fastboot" appears as "fastboot.exe" and not just "fastboot." if it is "fastboot" you need to go into folder options and show extensions otherwise you'll be trying to flash "recovery.img.img" and SDK wont recognize it
tohg2 said:
ok i have fastboot devices seeing the device. but adb devices still wont see it. when i do fastboot flash recovery recovery.img it says cannot load recovery.img. i put the clockwork file in the tools folder renamed at recovery.img. do i leave it as a zip file though?
Click to expand...
Click to collapse
Make sure you are typing the full file path, for example on my setup its "fastboot flash recovery c:\android\tools\recovery.img"
Sent from my Nexus S using XDA App
file extensions are being shown and it is named recovery.img. still saying cannot load "recovery.img" i have tried several recovery downloads from different sources. as for file size of the img its 3,988kb sound right? i tried fastboot oem lock and unlock and everything worked fine. is there another recovery img i can try. maybe a stock recovery or somehting?
ok so i tried "fastboot flash recovery c:\program files (x86)\android\android-sdk\tools\recovery.img" exactly and still nothing i have the path modified in the system so i was under the assumption that i didnt have to write out the whole path in the command prompt.
tohg2 said:
ok so i tried "fastboot flash recovery c:\program files (x86)\android\android-sdk\tools\recovery.img" exactly and still nothing i have the path modified in the system so i was under the assumption that i didnt have to write out the whole path in the command prompt.
Click to expand...
Click to collapse
cd C:\program files (x86)\android-sdk\tools\
fastboot flash recovery recovery.img
is what you want to do.
tried that path and still got nothing. i re-booted my pc thinking that would help and now i cant find my device with fastboot devices. adb isnt recognized either now. i just cant catch a break. although i suppose its my fault. i really appreciate you going back and forth with me like this. with all the trouble i am having does trying odin make any sense? i searched a bit but there dosent seem to be alot of info on that either
tohg2 said:
tried that path and still got nothing. i re-booted my pc thinking that would help and now i cant find my device with fastboot devices. adb isnt recognized either now. i just cant catch a break. although i suppose its my fault. i really appreciate you going back and forth with me like this. with all the trouble i am having does trying odin make any sense? i searched a bit but there dosent seem to be alot of info on that either
Click to expand...
Click to collapse
Odin is last resort. If fastboot devices shows your phone you will be able to flash recovery. Reinstall phone drivers and get fastboot to work. Then get back to trying to flash recovery. I really think it is some small mistake. Did you exctract the zip of recovery and copy the .img file?
The error you were getting means the appropriate file was not found in the file path you specified, so its not a phone error.
Sent from my Nexus S using XDA App
got it. the first line in my command promt kept saying c:\users\dana>. i couldn't delete it so i ignored it and kept typing in the path after that but i guess it was always looking in users/dana and that wasn't where the img file was. i put the img file alone in the users/dana folder and it worked. i guess i am a bit slow to understanding the command prompt. thanks again for everyone's help and patience
tohg2 said:
got it. the first line in my command promt kept saying c:\users\dana>. i couldn't delete it so i ignored it and kept typing in the path after that but i guess it was always looking in users/dana and that wasn't where the img file was. i put the img file alone in the users/dana folder and it worked. i guess i am a bit slow to understanding the command prompt. thanks again for everyone's help and patience
Click to expand...
Click to collapse
Cool! Glad you got it, good job!
Sent from my Nexus S using XDA App
Please help, I'm having the exact the same problem
I know, I shouldn't have play around with my phone since I don't know much about rooting the device.
My phone booted into Andriod logo with an unlocked, I have successful downloaded
clockwork recovery 3.0.2.5 and rename it to recover.img
I ran following command
fastboot flash recovery recovery.img and it was successful..
I tired to reboot my phone after that as normal but I'm still getting the same screen which only showing the Android Logo with an unlocked lock.
I'm not sure what I am suppose to do after need to get my phone to work again, any help would be appreciated.
Thank you,

Half bricked Xoom, deleted everything - help appreciated

Hello,
again i need help I have unlocked the bootloader on my Xoom, the i have flashed TWRP and downloaded a Rom and the Gapps. I copied the gapps onto the device and followed instructions which came with the rom. I was instructed to wipe "system" too which i did.
Of course that deleted the downloaded rom and gapps too. Now i have TWRP and was excited to mount USB storage and just copy over again the rom and gapps but unfortunately there is no mount as USB option.
What and how is the smartest way to go about it? I wanted to sideload over ADB but the device is not found. I have really tried everythin in my knowledge, hope someone can help
cheers
Come on guys, really need help here. My kids are killing me for the damn thing
I have same problem.......it's an issue of twrp !
Have you tried a micro sd card? (copy the rom and gapps there from a pc then put it in the Xoom, etc...)
Worst case, you should be able to grab the stock images http://forum.xda-developers.com/wiki/Motorola_Xoom and fastboot flash the device back to stock.
Have the same problem
dosada, could you solve the problem?
airesch, I tried to mount sd card but it is impossible. How can I return to stock without ADB because computer is not recognized?
hbtwender said:
dosada, could you solve the problem?
airesch, I tried to mount sd card but it is impossible. How can I return to stock without ADB because computer is not recognized?
Click to expand...
Click to collapse
Stock flash doesnt require adb, just fastboot mode. You may need to still install a driver, but if you can boot into recovery then the xoom should also be able to boot into fastboot mode and be recognized by a pc. If the instructions on the link I gave arent enough, I will see if I cant find something tomorrow when I am on a pc.
Sent from my GT-N8013 using XDA Premium 4 mobile app
hbtwender said:
dosada, could you solve the problem?
airesch, I tried to mount sd card but it is impossible. How can I return to stock without ADB because computer is not recognized?
Click to expand...
Click to collapse
NOTE: This WILL erase everything remaining on the device. In the case of the above, I don't know that you have much choice, just be forewarned.
Lord AIO toolkit has all the tools you need (look at the second post if you need the Windows driver.) Extract both the stock image zip and the toolkit (unless you have the sdk, in which case as long as you can find fastboot.exe you should be fine,) to somewhere convenient. Install the windows driver if you never have before and reboot your pc.
1. Boot your Xoom in fastboot mode: Power+Vol+ until it says: Starting Fastboot protocol support (you may need to tap the Vol+ instead of holding it the whole time, my Xoom has always been a bit picky about the buttons.)
2. Connect the usb to the pc
3. In a Command prompt window, go into the extracted version of the toolkit above (or if you have the sdk, just go to where you have fastboot.exe from it)
4. Run the following commands (replacing the files at the end with the full extract path from your stock image zip extract)
fastboot flash boot boot.img
fastboot flash system system.img
fastboot flash recovery recovery.img
fastboot flash userdata userdata.img
fastboot erase cache
"fastboot reboot" if you want to stay unlocked or "fastboot oem lock" if you want to re-lock and follow the prompts. The Xoom will get OTA updates even if it's unlocked, so there should be no reason to re-lock unless you need to send it in for service.
The driver isn't what I used to use, but it *should* work, and the instructions should be correct as far as I can remember. As long as you don't flash the wrong image to the wrong place/run out of power during flashing/disconnect during a flash then none of this should permanently damage the hardware and should get you a working device again. It's just that it's been so long since I have personally done any of this that I have forgotten more than I ever knew .
Solved
airesch said:
NOTE: This WILL erase everything remaining on the device. In the case of the above, I don't know that you have much choice, just be forewarned.
Lord AIO toolkit has all the tools you need (look at the second post if you need the Windows driver.) Extract both the stock image zip and the toolkit (unless you have the sdk, in which case as long as you can find fastboot.exe you should be fine,) to somewhere convenient. Install the windows driver if you never have before and reboot your pc.
1. Boot your Xoom in fastboot mode: Power+Vol+ until it says: Starting Fastboot protocol support (you may need to tap the Vol+ instead of holding it the whole time, my Xoom has always been a bit picky about the buttons.)
2. Connect the usb to the pc
3. In a Command prompt window, go into the extracted version of the toolkit above (or if you have the sdk, just go to where you have fastboot.exe from it)
4. Run the following commands (replacing the files at the end with the full extract path from your stock image zip extract)
fastboot flash boot boot.img
fastboot flash system system.img
fastboot flash recovery recovery.img
fastboot flash userdata userdata.img
fastboot erase cache
"fastboot reboot" if you want to stay unlocked or "fastboot oem lock" if you want to re-lock and follow the prompts. The Xoom will get OTA updates even if it's unlocked, so there should be no reason to re-lock unless you need to send it in for service.
The driver isn't what I used to use, but it *should* work, and the instructions should be correct as far as I can remember. As long as you don't flash the wrong image to the wrong place/run out of power during flashing/disconnect during a flash then none of this should permanently damage the hardware and should get you a working device again. It's just that it's been so long since I have personally done any of this that I have forgotten more than I ever knew .
Click to expand...
Click to collapse
Hey airesch, thank you for your support. I couldn´t follow yours suggestion because my xoom was not recognizing the PC or MAC. However I discovered that my sdcard was broken. When I´ve tried a new one with ZIP files inside it works perfectcly and I could return to my old room doing flah in the recovery mode of TWRP2.2.
It is important to note that my Xoom did not find .IMG files inside the card but only ZIP ones. Any way it worked perfectly and I hope this solution will serve to other in solving his/her problems.
Many thanks
Well, that works too, and that was closer to what I originally suggested (tho I didn't expect you had a bad sd card.)
And yes, recoveries generally don't support IMG files directly, you need to have a specially crafted zip to flash those in. IMG files directly are for fastboot/pc tool flashing.
Congrats on fixing it.

[Q] Wiped everything, can't get ADB to see my device anymore

Hi everyone, this is the first time i write here. I've been dealing with this problem for some hours now and it seems i can't get out of it alone.
Today i decided to wipe the N5 and install Lollipop. I downloaded the factory image, wiped everything from TWRP (i know it was unnecessary...), started to flash all the stuff from ADB...but i got some error. I tried again, and got the same error again. So i started to mess around...a guide told me to give adb the following commands:
fastboot erase boot
fastboot erase cache
fastboot erase recovery
fastboot erase system
fastboot erase userdata
I think it was after this that ADB stopped recognizing my phone, and now i can't even get to the recovery. I tried uninstalling and reinstalling sdk and google usb drivers plenty of times, i even tried some alternative solutions like LGUnitedMobileDriver and Universal Naked Driver.
I can see that windows sees the device (which now only works in fastboot mode) from Device Manager, and that ADB is working (if i give the command "adb version" it responds correctly), but there's no way to make adb recognize the Nexus. If i just install the drivers, Device Manager shows it as "Android Bootloader Interface". A guide i found says to manually select "Android ADB Interface" or "Android Composite ADB Interface", and so i have done (i have to untick the "show compatible hardware" box in the installation process to see this options), but no luck.
Does anybody have any idea how to solve this? What may i have missed?
You need fastboot commands to flash images in recovery. ADB will only recognize the device when you have android running
Try "fastboot devices" command without quotes. It should detect your phone and return a serial number. If so, flash the images (see the sticky on how to return to stock and follow the method 2)
Adb and fastboot are two different things. ASB works in android or recovery but is not used for flashing. Fastboot works in bootloader.
I wrote an "adb and fastboot" thread. Use it uninstall your Google drivers and install naked.
Omg, it was that simple! Thank you guys, you were so fast :good:
If you downloaded the factory image, it seems like you just need to flash that with fastboot.
1). Reboot into the boot loader by holding down volume when powering on.
2). Type fastboot devices to make sure your phone is recognized.
3). Untar the image and execute the flash-all.bat script. This will completely factory reset your phone, including stock recovery. Note this will also delete your internal storage files.
If you don't like this approach, you can also flash the recovery partition with fastboot flash recovery recovery.img, where recovery.img is the TWRP image you downloaded. Once you boot into recovery you can restore a nandroid or whatever from there. Good luck.
Sent from my Nexus 5 using Tapatalk

HTC ONE S forgot to s off

hey guys i have a question.. i made a total n00b mistake and now i am not sure what to do..
I have a htc one s
-i rooted the phone and put twrp 2.8 the newest one then i tried to load a custom rom.. i read somewhere on line that you did not need s off to do this so i tried and now everytime the phone boots it loads the htc screen but goes to a black screen which is kind of dim .. anyway my bootloader is unlocked its version 2.15 and i can get back in to my recovery and mount it i tried several roms but none work.. i was wondering if someone here has a stock rom or something that can get my phone to boot in to a os.. i have tried using fastboot to try and s off but everywhere i read it says u need debugging on my drivers are installed correctly but when u do adb devices it shows empty space.. ive tried many drivers even the google generic i cannot get it to work for the life of me... any help will be appriciated
cheers
Sam
Well let's take it easy. There were some things you've missed when reading so that's why you run into problems.
First thing you missed is that YOU MUST FLASH THE KERNEL IN FASTBOOT if you're S-On. That is EVERYTIME you flash a ROM.
Second, when you're in fastboot, you won't have "ADB devices" command working, you'll have to use "fastboot devices" command instead, ADB does not work while in fastboot.
What you'll have to do is like this:
1. Take any ROM you'd like to flash, place it on your sdcard (while you're in recovery you can mount sdcard to be accessible from pc)
2. Extract from the rom and save it on your pc (in the same folder where adb/fastboot commands are, usually /android-sdk/platform-tools) the "boot.img" file that's in the root of the ROM zip. That'll be called generic "the kernel".
3. Flash the ROM in recovery
4. Reboot to bootloader then while still connected to pc via USB, select fastboot mode. On your screen the "fastboot USB" will be shown.
5. Check if fastboot drivers are installed and fastboot commands are working by issuing "fastboot devices" command. If it'll not return your device then check if drivers are installed properly and you are not using an USB 3.0 port on windows 8.1 (were reported some issues with this configuration).
6. Having fastboot working, open command prompt in the location where fastboot is (and where you have saved the boot.img file) and issue the command: "fastboot flash boot boot.img"
7. Reboot
Now your new ROM should boot and work. Pay attention to choose the right ROM for your hboot and don't forget to do these steps EVERYTIME you're flashing a ROM.
If you're still looking for a stock ROM to flash, there's a thread with all RUUs linked, choose the one for your carrier or model type and run that one but I guess you won't need that
Good luck
Sent from nowhere over the air...

LG GPAD 7 stuck on Fast Boot

Purchased an Lg Gpad 7 Wifi tablet (v400) 2 weeks ago. Came with preinstalled Lollipop android so i couldnt install a recovery rom to flash any other custom roms. Downgraded to Kitkat version following the instructions on Xda forums and succesfully installed Twrp. When i installed Cyanogenmod 12.1 through Twrp i got stuck in fastboot screen.
Any suggestions and / or solutions would be greatly appreciated.
I had a similar problem.. Only mine was stuck at the bootloader. Go in TWRP and repair /data and other partitions. My data partition gave me an error since F2FS is a little flaky and some ROMs corrupted it (claimed they supported it). I would recommend erasing the system, cache and data partition if you can't get into TWRP.
The problem is i cant get out of fastboot whatever i try. It says start on bootloader but the tablet just restarts on an empty screen doing nothing.
Hakalai said:
The problem is i cant get out of fastboot whatever i try. It says start on bootloader but the tablet just restarts on an empty screen doing nothing.
Click to expand...
Click to collapse
if you have an sd card, try removing that, then reboot.
if that doesnt work, try entering fastboot command, fastboot continue
Tried without sdcard and i get the same fastboot screen.
How can i give any commands? The only options i have are Restart Bootloader / Restart / Power off. Tried restarting bootloader but i get nothing in return tablet just stays on with nothing on screen.
Hakalai said:
Tried without sdcard and i get the same fastboot screen.
How can i give any commands? The only options i have are Restart Bootloader / Restart / Power off. Tried restarting bootloader but i get nothing in return tablet just stays on with nothing on screen.
Click to expand...
Click to collapse
you said it was stuck on fastboot, if thats the case, install any needed drivers on your pc, connect device to it, open a terminal in the fastboot dir (after you go get fastboot), then try those commands i gave. you could also try, fastboot reboot dont think i mentioned that before.
bweN diorD said:
you said it was stuck on fastboot, if thats the case, install any needed drivers on your pc, connect device to it, open a terminal in the fastboot dir (after you go get fastboot), then try those commands i gave. you could also try, fastboot reboot dont think i mentioned that before.
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Did as you said but every command i gave gives me an error message in adb terminal. There are new lines in fastboot menu in tablet now. Bottom two are SECURE BOOT - enabled & LOCK STATE - locked.
Hakalai said:
Did as you said but every command i gave gives me an error message in adb terminal. There are new lines in fastboot menu in tablet now. Bottom two are SECURE BOOT - enabled & LOCK STATE - locked.
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hmm, ok, im guessing it would have said that normally, when not broken. all the command does is try to release it past where its stuck. it doesnt actually flash, lock, unlock, or change anything.
imo, this seems good, because now we know fastboot is working.
i own lg devices, but not your specific device. i would hate to give you some bad advice and make your tablet broken more, but if it were me in this situation, i would try to flash the factory KK firmware you used to downgrade with odin or however you did it. hopefully, that will clean everything up and let it boot properly.
if for whatever reason you cant do that, we could try extracting the factory file, and just flashing recovery and system, those should be the only things that got changed putting on twrp and cm normally.
Sorry, I have the serious proplem wtih my LG pad V400, I rooted it and using <LG Flash Tool 2014> with <V40010c_00.kdz> to downgrate the firmware but their is error then my LG pad stuck in fastboot menu as with just turn off, restart and restart bootloader. if i seclect one one them the tablet just logged again the fastboot menu
it stuck on the fastboot menu and i cannot do nay think with it. I can restart with factory restore mode but when select yes to restore, it will restart and log in fastboot menu again.
I downloaded adb and fastboot program and put in one folder <Minimal ADB and Fastboot> in C:\Program Files (x86)\Minimal ADB and Fastboot
I dont have recovery image so i download file <cm-13.0-20160421-NIGHTLY-v400-recovery.img> form your link to download TWRP file
move it to folder of fastboot programe and changed its name to <recovery.img>
I turn on the tablet and it waited at fastboot menu
when i run the command <fasboot flash recovery recovery.img> and they said some thing wrong like in picture
please help me

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