And so the story goes ...
I have Yoga2 1050L tablet that stuck on KitKat, after some fiddling with it to force update I went with steps mentioned here
[guide] unbrick lenovo yoga 2 1050f bios bootloop
Lenovo Yoga 2 1050F EFI Bios bootloop This Save My Tablet but can BRICK your device, so use at your own risk FOLLOW THE FOLLOWNIG STEPS STEP BY STEP 1) Install Fastboot (Link is below) 2) Instal USB drivers (Link is below) 3) Install...
forum.xda-developers.com
long story short didn't pay attention what I was doing (dogs/kids were not helping) and I end up with something that is beyond my knowledge / skills
I am still able to power v-/v+ to do fast boot but then anything I do ends like on photo
If anyone is able to help me Id love to try any rescue mission since i have e-waste and tablet was still good enough to read books
so F1! guys, thx in advance
M4RK
Related
Hello everybody, I was trying to revert to a 4.x rom because bluetooth tethering was not working... anyway I used Intel Phone Flash Tool and it seems like he failed to flash boot.bin but restarted anyway
SO I only have the Intel BIOS, I can access all the settings, but I cannot start it in Fastboot mode (it just hangs on FastBoot Starting...) or anything that resembles Android.
Still this BIOS seems more a PC to me than a tablet so I am posting here because maybe there is someway to attach an USB OTG (for example) and boot something from there.
@ionioni is working on a safe downgrade path. We did mine but it could be a disaster if not followed correctly. Your other choice is Lenovo repair support. When i bricked mine, it only took 6 days to get it back in my hands. You could also try the steps here... http://forum.xda-developers.com/showpost.php?p=62237383&postcount=5
Sent from my YOGA Tablet 2-1050F
Thank you very much @workdowg, I passed by that thread, just "DNX" mode does not work on my tablet.
So Repair Support it is.
It's very sad such an awesome tablet has so poor ROM that people has to downgrade it...
Mr.Gamer said:
................but I cannot start it in Fastboot mode (it just hangs on FastBoot Starting...) ..............
Click to expand...
Click to collapse
that is DNX mode!!! that message translates to: i DNX have started and now i am waiting for YOU to give me a (fast)boot image to start... so that message is exactly the message indicating that you ARE in dnx mode.
updated: read this http://forum.xda-developers.com/thinkpad-tablet/general/yoga-tab-2-830-1050-1380-to-kitkat-t3240487
edit:
before anything:
1. download/extract the files attached to this post, now start your tablet (using the Pwr+VolUp+VolDown) to get to that somehow confusing "Fastboot starting..." message = DNX mode (you must get to that message before continuing!)
2. run the extracted tmp-root-1050F-lollipop.exe file (i am assuming you are on the X64 = Lollipop firmware as that screen pictures you attached shows), should do some stuff and in the end if all well will drop you to a root shell (in that post theres a PrtScr for reference), just follow the messages it's pretty easy. should the exe get stuck/not work put your tablet again in DNX mode and try the other file tmp-root-1050F-kitkat.exe. (this means somehow the bios got downgraded partially on your attempt to return to kitkat). this is just a test to see how to move on, it will not fix nor change anything on your tab, after you reboot it will be in the same state as before (that is if you don't do stuff in that root shell of course)
- report back which one worked (gived you a shell)
- also do you want to go back on kitkat or do you want to stay on lollipop? is important to know as the steps are different
So i rooted my Yoga tab just a few hours ago and it went great. Booted back in and installed some apps and started to remove some apps. I rebooted the tablet shortly after and got stuck in some bootloop at the title screen. (Lenovo for those who do) It boots three times and then its just black with some flickering.
I got in to recovery and did (probably really, really stupid) a reset of data and cache. figure that will solve everything. It didn't. But it did not however make it works. Still the same bootloop.
if i leave it on for like 10 minutes, the screen where you choose language and time comes up but i can't press anything. Then everything goes black and flickers.
I was on stock kitkat when this happened and I've searched all around the internet for answers. I don't understand half of the things a read. Reflashing a new bios and fastboot what not. Almost every link in every thread is dead.
I need help and i hope you can help me with a solution too how i can get my tab up and running.
I have no back ups what so ever because i'm stupid so i need just hard reset everything not worrying about saving anything. (didnt have anything on the tab anyways)
Info again:
Yoga Tab 2 10.1 1050F
Stock Kitkat
Sirboscos said:
So i rooted my Yoga tab just a few hours ago and it went great. Booted back in and installed some apps and started to remove some apps. I rebooted the tablet shortly after and got stuck in some bootloop at the title screen. (Lenovo for those who do) It boots three times and then its just black with some flickering.
I got in to recovery and did (probably really, really stupid) a reset of data and cache. figure that will solve everything. It didn't. But it did not however make it works. Still the same bootloop.
if i leave it on for like 10 minutes, the screen where you choose language and time comes up but i can't press anything. Then everything goes black and flickers.
I was on stock kitkat when this happened and I've searched all around the internet for answers. I don't understand half of the things a read. Reflashing a new bios and fastboot what not. Almost every link in every thread is dead.
I need help and i hope you can help me with a solution too how i can get my tab up and running.
I have no back ups what so ever because i'm stupid so i need just hard reset everything not worrying about saving anything. (didnt have anything on the tab anyways)
Info again:
Yoga Tab 2 10.1 1050F
Stock Kitkat
Click to expand...
Click to collapse
Hello !
You should try to flash stock KitKat Lenovo Firmware with IntelFlashTool !
Also, you should install some intel drivers : Intel® USB Driver for Android* Devices & iSocUSB-Driver-Setup .
KitKat Firmware must be available under Lenovo site !
Put your device in DNX mode ( press & keep at the same time all three hardware buttons , when device reboot just release power button ... you will see soon "Fastboot starting..." , right now you can release volume up & down ) - connect your device via USB with your desktop and start Intel Flash Tools . Just unpack stock KitKat Lenovo Firmware and select under Intel Flash Tools , Flash file : "flash.xml" from Lenovo Firmware !
Good luck !
surdu_petru said:
Hello !
You should try to flash stock KitKat Lenovo Firmware with IntelFlashTool !
Also, you should install some intel drivers : Intel® USB Driver for Android* Devices & iSocUSB-Driver-Setup .
KitKat Firmware must be available under Lenovo site !
Put your device in DNX mode ( press & keep at the same time all three hardware buttons , when device reboot just release power button ... you will see soon "Fastboot starting..." , right now you can release volume up & down ) - connect your device via USB with your desktop and start Intel Flash Tools . Just unpack stock KitKat Lenovo Firmware and select under Intel Flash Tools , Flash file : "flash.xml" from Lenovo Firmware !
Good luck !
Click to expand...
Click to collapse
Thanks for your help.
Unfortunately, i think it made i made it worse
The flash stopped at 70% and now i'm stuck in a bootloop at the first power up screen.
Can you still get in to fast boot,and are you sure you were on KitKat rom.
try and start your tab in normal fastboot mode (from the recovery console select 'reboot to bootloader' or use from power off the combo keys Pwr & Vol+ or Pwr & vol- one of these two should bring you to the Fastboot/Droidboot menu) and from there tell me what the ifwi entry says... BLADE_21....
Problem solved!
I had to check "Force fastboot sparsing" and change it to 500MB in FlashTool and then it worked. Everything is now up and running.
Thanks for your replies.
corasman said:
Can you still get in to fast boot,and are you sure you were on KitKat rom.
try and start your tab in normal fastboot mode (from the recovery console select 'reboot to bootloader' or use from power off the combo keys Pwr & Vol+ or Pwr & vol- one of these two should bring you to the Fastboot/Droidboot menu) and from there tell me what the ifwi entry says... BLADE_21....
Click to expand...
Click to collapse
hey up dude, like a pleb i didn't flash the stock boot-loader to my tab before taking the latest update. Have you got a copy of the stock lollipop boot-loader? Or the files to downgrade to kitkat to start again?
Cheers mush
Edit- I flashed the patched esp and then tried to flash a copy of the bootx64.efi but it failed. But it has rebooted in to twrp, i have restored my backup and its booted... sweet
Edit 1 - Defo need a stock boot-loader. Can anyone help
Hi Rob
These files I copied from various threads on here.
They are on my g/drive,if they are any good to you or anyone else.
http://tinyurl.com/zdr92pf
http://tinyurl.com/zmmaww5
http://tinyurl.com/zgt7sjo
http://tinyurl.com/hjy4kks
http://tinyurl.com/jhrjscj
corasman said:
hi rob
these files i copied from various threads on here.
They are on my g/drive,if they are any good to you or anyone else.
http://tinyurl.com/zdr92pf
http://tinyurl.com/zmmaww5
http://tinyurl.com/zgt7sjo
http://tinyurl.com/hjy4kks
http://tinyurl.com/jhrjscj
Click to expand...
Click to collapse
can i use restore bios.exe for lenovo 1050l? Or it is just for f?
Bios Downgrade Tool Query
Hi mate, sorry for such a late reply but I'm struggling trying to get the bios downgrade tool to work on my tablet. Its plugged in and the "fast boot starting" message is showing but when I click on the tool on my pc and start it, nothing changes with the tablet. Is there an obvious step I am missing? Kind of new to this.
Thanks
Hello chaps. Random question. I have searched and searched for an answer but cant find a 100% reliable one. Can our 1050F 10.1 inch run Ethernet on the OTG? I have been liaising with Lenovo tech support via email for 5 weeks now and they are certain it can but I cant get it going with my Plugable OTG/Ethernet adaptor. So, what say you folks? Thanks.
On the Lollipop.
corasman said:
Hi Rob
These files I copied from various threads on here.
They are on my g/drive,if they are any good to you or anyone else.
http://tinyurl.com/zdr92pf
http://tinyurl.com/zmmaww5
http://tinyurl.com/zgt7sjo
http://tinyurl.com/hjy4kks
http://tinyurl.com/jhrjscj
Click to expand...
Click to collapse
Can somebody share those files? I am looking for 1050f-esp-patched.img over all Internet , and all links are broken.
File is needed to unlock bootloader on kitKat version. Thanks in advanced!
rvsrf said:
Can somebody share those files? I am looking for 1050f-esp-patched.img over all Internet , and all links are broken.
File is needed to unlock bootloader on kitKat version. Thanks in advanced!
Click to expand...
Click to collapse
Perhaps see here?
Lenovo Yoga Tablet 2 - Официальные прошивки - 4PDA
Lenovo Yoga Tablet 2 - Официальные прошивки
4pda.to
Hi Everyone,
My tablet is Lenovo B8080-F model, 16GB with Wifi. I got it rooted and installed TWRP on it. I was so over excited about this and wanted to flash custom ROMs on it. I searched and could not get the proper ROM for the B8080-F, in my eagerness, I decided to flash the ROM for Lenovo A3000. Since then my tablet could not boot up again. It got stuck at the Lenovo logo. My windows system can still detect the tablet when plugged to the PC, but ADB DEVICES command shows nothing.
I need help. I need step-by-step guides on how to revive the tablet. I appreciate.
Muyiwa.
Update:
My PC can detect the device. It is shown as Android ADB Interface under Windows Device Manager. There is no COM Port.
If I type: adb devices
Response: ? Unauthorized.
Please help!
Thanks.
Muyiwa.
Ouch
Me too, i need help
I actually have such an tablet lying around. Haven't been used in five years. Never got custom ROMs, right? I don't think Lenovo ever bothered to upgrade from Kitkat.
@[email protected]
@Mirage20000C
Hello everybody
A brand new yoga tab 3 plus dead after performing an 703L firmware toi an 703F , and now the tab is in a quite black luminous state ,cant switch it , go to recovery or fasboot mode,when trying the manipulation i got "unknown usb ..." (all the drivers installed)
Is there a way to get it back without jtag.
Thanks a lot
Plz help
is there someone ?
Did you try the Lenovo rescue and smart assistant?
Flashing Stock ROM failed.
Now won't boot of course, nor I can access fastboot. It's gone.
After turning Tablet on shows: "Boot Failed. EFI Hard drive"
and straight after that: "Boot Succeeded - Enter Setup"
Then BIOS like or actually BIOS shows - Title - VALLEYVIEW CO PLATFORM...
How can I fix fastboot? Or Droid Boot? I didn't even know I had BIOS in background?
I guess all blame me because I had Rooted... Is it trashing Tablet next step? Cause I couldn't find anything. I just wanted to go back to Stock ROM.
Anyone saw somewhere how to bring back fastboot? Or make it boot-able anything useful?
In that BIOS there is Boot Manager option and offers
- EFI Hard drive - Device path : PciRoot (0x0) /Pci (0x17, 0x0) /Ctrl (0x0)
- EFI Internal Shell - Device path : MemoryPapped (0xB,0xFFF50000,0xFFF8FFFF) /FvFile(C...
Can I somehow go somewhere from here?
Device Manager
Boot Maintenance Manage - has option Boot From FIle
- Boot Next Value... I'm lost.
I'm browsing that bios all possible ways to find something useful, but with no success.. Please help.
EDIT1: I find out that holding Power button and BOTH volume keys will start FastBoot - But mine stucks on "FastBoot Starting..."
There is already thread on xda discussing what to do when you got UEFI screen. restore-kitkat-bios-830-1050-v2 tool is the answer.
I lost that thread, so I'll answer to mine thread:
My state was - tablet ended up in UEFI. Couldn't get through but I did on the end with novice mistakes. So, here is advice and mistakes which cost me some time.
Spot that you need to be in DnX mode - kk-tool says that - pressed Volume keys and power button. Then tablet says FastBoot Starting...
Do not run KK bios restore tool with Intel Phone Flash Tool opened. Close Intel Phone Flash Tool. Then run kk-tool and follow instructions.
Then use Intel Platform Flash Tool to flash ROM (you need android driver and USB driver). I have used and working (not first image but some other second download worked): YT2-1050F_S0198_150422_ROW. Then I have tried to update to Android Lollipop but install failure.. Killed KitKat.. I'll google more tomorrow.
Let me know if you find working ROM able to update all the way successfully to Lollipop.
Looks scary when you see grey-blue UEFI screen - Oh, I must screwed up pretty bad if I lost FastBoot... You might think something like that, like I did. But kk tool really kick-off and helped.
I have searched quite thoroughly in this forum but I can not seem to find the restore-kitkat-bios-830-1050-v2 tool . I have this same problem and can not get my 830LC running.
All-in_One stock & rooted Firmware YT2-1050L
prabuddhadg said:
I have searched quite thoroughly in this forum but I can not seem to find the restore-kitkat-bios-830-1050-v2 tool . I have this same problem and can not get my 830LC running.
Click to expand...
Click to collapse
Found some folders from my softbrick after updating to lollipop.
Unlock bootloader ! !
Have uploaded all Files and ROM's i found for YogaTab 2-1050L.
temp TWRP
Stock Firmware KitKat Android
Stock rooted Firmware KitKat Android
For me worked :
"YT2_10_row_lte-blankphone-user-YT2-1050L_USR_S000215_1503241130_WW21_ROW"
Follow Guide inside folders
Good luck & have fun
DOWNLOAD ON MEGA - h**ps: // mega.nz/#F!gZZQXYha!EJovY_v_dyciO7pct9w68Q
Updating this old thread. I found my 1050F tablet and it has the same problem. I tried to download the files from the latest link of the thread but the link is dead
If anyone has those files it would be useful to me (and surely others)