Hey all,
I recently put the lolipop AOSP rom onto my G Pad, but wanted to revert it back to the stock software.
I plugged it into the computer and tried using the recovery tool, but it did not work, so I put the G Pad into download mode and it gets to a point where it has downloaded the software and is deploying it, but then fails every time.
I tried the offline KDZ method, but when the support tool loads it checks the connected device and always tells me to unplug it and try again.
Does anyone have anything in mind I could try or requires more information to offer a suggestion to me?
Thank you in advance.
I was in the same position a few hours ago. I downloaded the official LG Support tool (drivers and tool available HERE). Launch the LG Support tool, go to Options -> Upgrade Recovery and follow the steps. It should dowload the latest available official formware (V50020D) and flash it to your tablet. I'd recommend a factory reset, since you have CM installed on it. This procedure didn't erase /data (I've done it twice while trying to flash a custom recovery on it). Then you must use LG Flash Tool 2014.zip to flash an older firmware that has a bootloader that allows installing of a custom recovery. After flashing V20B or V20A, you must root it and flash a custom recovery (I'd recommend THIS ONE). It seems a little complicated, but this is the only way to un-brick it (it worked for me).
Get the apk from THIS thread after rooting your tablet (it should flash TWRP 2.8).
FIXED. Just had to try over and over until it went to 100%. Seems like its just random errors that prevent it from finishing so nothing but chance really!
squall458 said:
I was on Lollipop 5.0.1, rooted with twrp. I wanted to return back to stock. I tried factory reset but it wouldnt work properly. Someone on xda suggested I use the TOT/KDZ method to return to stock. Both methods failed and I am stuck in DOWNLOAD mode. I tried getting back to TWRP and it goes to DOWNLOAD mode instead.
I did make a back up before this happened but I cant get back to TWRP. I used the guide here on XDA to return to stock. Please, I hope I didnt brick my G3. Im freaking out right now with no cellphone right now working.
Im desperate guys. The person/post that saves my day, I will send you a small paypal donation as a sign of thanks!
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Are you sure you did the TOT/KDZ method correctly? Because if you did it should overwrite all partitions and it should go back to normal
Download the D852 KDZ from here http://lg-phone-firmware.com/firmware-Lg+G3-Tutti-41.html and then flash it with LG Flashtool. Since your having problems its best if you use CSE flash since it will wipe everything and start new
itsbighead said:
Are you sure you did the TOT/KDZ method correctly? Because if you did it should overwrite all partitions and it should go back to normal
Download the D852 KDZ from here http://lg-phone-firmware.com/firmware-Lg+G3-Tutti-41.html and then flash it with LG Flashtool. Since your having problems its best if you use CSE flash since it will wipe everything and start new
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It seems to not communicating with my phone. On the tot method it says Cannot enter download mode. But my phone id in download mode and i changed it to com41 for the lg modem. Im using usb 2.0 with original usb cable.
I will try the firmwares on your link posted. Thank you so much. I will try again this monday. Im stuck in the hospital with my best friend who got into a car accident. Things have been rough the last few days. If your suggestions work out paypal your wqy my friend.
I fixed it finally!
Im not that experienced but have been playing around trying to learn about roms etc. I used the flashify app to flash a rom but accidentally used the wrong rom. I grabbed the one for the v500 model instad of vk810. Needless to say it messed up. When the tablet boots it stays on the boot image for several minutes then it will attemp to update apps but gets stuck there. I have tried many fixes. The LG mobile tool doesnt work. I try to update recovery. It downloads the update but wont install. I cant force the tablet into recovery with button pushes. I have been able to put the tablet into twrp 2.7.8.1 recovery with droid explorer. From there I have tried to flash about 3 different roms that all say they should work for the vk810 but i get errors with all of them and they fail. Im not sure if there is any hope to get the tablet working again but hope someone can help.
First, I don't think you can use Flashify to flash a whole ROM at all. Definitely not recommended, even if it's is supposed to be capable of doing that. I haven't tested flashing ROMs with it so no idea if it can work or not.
Can you put it in Download mode? If so, install the Verizon LG drivers, reboot the PC and try LG Flash Tool 2014 with the 11A KDZ, you can get the KDZ from the link in my signature. It's easiest to root and put TWRP back on that old stock ROM.
FYI it would have to be in Download mode for the mobile tool to work - just in case you didn't know or didn't have it in Download mode. LG Flash Tool 2014 does the same thing as the mobile tool except the mobile tool re-downloads the newest KDZ every time you try it unless you hack it. It's much easier just downloading the KDZ separately and keeping it on file for times like this to flash with LG Flash Tool 2014.
Just remember, if you use LG Flash Tool 2014, ignore any error it throws at you. Just drag the dialog boxes out of your way, don't press any buttons in error dialogs. 99% of the time, if you just ignore them within 10-20 minutes it'll have successfully flashed your VK810 anyway.
Also, once you install the drivers and reboot, put your original USB cable that came with the VK810 into a USB 2.0 port on the PC, with the tablet completely off, hold the Up Volume button in, connect the tablet end of the USB cable and keep the Up Volume button pressed for another second or two, and you should see a very dim "Download Mode" graphic in the center of the screen. It's very hard to see. The first time you connect the tablet in Download mode to a different USB 2.0 port or Windows installation, it can take up to 10 minutes to actually load the driver you previously installed. Look in Device Manager under the Modem section to see when the driver is fully loaded by looking for the LG device entry there.
Question: I assume you mean TWRP v2.8.7.1, but I was just wondering where you found 2.8.7.1? I've only found 2.8.7.0, not that it's a big deal.
i tried installing the lastest ota update while i had twrp installed, i have tried everything to get out of this loop.
tried flashing the updated rom off the oneplus website and if gave me errors
just looked at my phone and now it wont turn on what so every getting really stressed please help
[SOLVED]
went back to stock recovery and side loaded the full 1.4 gb rom i will leave a link for tutorial that i used, i wanted to get back to complete stock and this was the one use
"https://forums.oneplus.net/threads/guide-how-to-unroot-your-oneplus-3-and-go-back-completely-to-stock.456232/"
When you have TWRP you have to install full zip, not simply the eval OTA zip
bob_cheeseman5 said:
i tried installing the lastest ota update while i had twrp installed, i have tried everything to get out of this loop.
tried flashing the updated rom off the oneplus website and if gave me errors
just looked at my phone and now it wont turn on what so every getting really stressed please help
Click to expand...
Click to collapse
Flash the stock recovery.
Get stock recovery from downloads.oneplus.net
I cant seem to flash the stock recovery. The device is not visible in adb devices or fastboot devices. im facing the same issue.
If you are using TWRP 3.0.4-0 - try a hard boot...hold down the power button for 20s...wait 20s, power it back on.
bob_cheeseman5 said:
i tried installing the lastest ota update while i had twrp installed, i have tried everything to get out of this loop.
tried flashing the updated rom off the oneplus website and if gave me errors
just looked at my phone and now it wont turn on what so every getting really stressed please help
Click to expand...
Click to collapse
easy solution. Boot into fastboot
download this tool.
https://forum.xda-developers.com/oneplus-3/development/toolkit-oneplus-3-toolkit-unlock-t3398799
if newest version isnt working, download an older version with older twrp
than unzip the tool and run the .bat file and install twrp.
Thats it
There are many posts on Nougat not working with official TWRP (based on 6.0 build). Try booting into stock recovery. performing a system settings reset, then booting into fastboot and run the adb command, <fastboot boot TWRP-3.0.2-1.28.img>. From there you can do virtually anything you need to do. I recommend at least using a modified version of TWRP (such as 1.28). This has been posted many times before, please try and do a search for the answers first, it will help tremendously. Thanks
recovery
i had the same problem on my rooted OP3 when i used TWRP 3.0.2-1 , it worked to flash the full 4.0.1 rom but failed for everything else, flashing latest verion of twrp fixed it for me
Got the same problem (unrooted phone + device state locked, cannot access recover, but can access fastboot) with an added "benefit", USB debugging mode was off before it all went crashing and burning.
How to access my phone via PC? (all the guides I've found assume I had USB debugging mode on before the phone got soft-bricked, but as a normal phone user who never installed anything custom, I've never figured it is A MUST BE ON function).
Or simpler question - what tool to use to turn on the USB debugging mode? (if that is at all possible?)
Aislandas said:
Got the same problem (unrooted phone + device state locked, cannot access recover, but can access fastboot) with an added "benefit", USB debugging mode was off before it all went crashing and burning.
How to access my phone via PC? (all the guides I've found assume I had USB debugging mode on before the phone got soft-bricked, but as a normal phone user who never installed anything custom, I've never figured it is A MUST BE ON function).
Or simpler question - what tool to use to turn on the USB debugging mode? (if that is at all possible?)
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I have tried doing the installing of the newer twrp but cant find a newer version of it, i am on 3.0.2-1. i have the same problem as you that my USB debugging isnt on i dont think so when trying to use the op3 tool kit i can get it to pick up fast boot but nothing else.
have you found a solution to your problem yet?
bob_cheeseman5 said:
I have tried doing the installing of the newer twrp but cant find a newer version of it, i am on 3.0.2-1. i have the same problem as you that my USB debugging isnt on i dont think so when trying to use the op3 tool kit i can get it to pick up fast boot but nothing else.
have you found a solution to your problem yet?
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Noted that you solved your issue, but this post is about the new version of TWRP. Version 3.0.3 is available on twrp.me and it works with Nougat.
bob_cheeseman5 said:
I have tried doing the installing of the newer twrp but cant find a newer version of it, i am on 3.0.2-1. i have the same problem as you that my USB debugging isnt on i dont think so when trying to use the op3 tool kit i can get it to pick up fast boot but nothing else.
have you found a solution to your problem yet?
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Click to collapse
Gave up trying and booked a session with OP technicians Will see how it goes in a week.
I got this phone about a year ago unlocked and it came with V20a-EUR-XX. I try and update from the update center and it says I am up to date. When I plug it into my PC and go to LG PC suite it says there is a update but it fails to install it and says to remove the USB and battery and restart and then put it back a try again. I have tried this many times and it hasn't worked. The only thing I can think of is to try and update it with .kdz but I am not sure how safe this is and would it mess up my phone. The phone isn't under warranty any more. I haven't modified the phone in any way like rooting it.
So here are my questions
How safe is it to flash a .kdz and is it likely to mess up my phone?
Do you have any other suggestions?
It is safe as updating the phone the official way. You have nothing to be afraid. Download the latest v30n marshmallow kdz file and flash away. no reason to stay on lolipop. Follow the instructions and make sure you do a full factory reset after.
Tutorial
do you have a link to a good tutorial which guides through the whole process of flashing