@MikeChannon Content deleted, please close
Tethered CWM or TWRP and Root KitKat or Lollipop. And temp_root
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Reserved
reserved
Downgrade Lollipop Firmware (Return to stock KitKat from Lollipop)
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Repair Lollipop upgrade - entered bios error
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Yoga Tab 2 (830,1050,1380) - unlocking the bootloader
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Partition layouts
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AoL - Android ON Linux
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YT2 Firmware and Various Tools
Removed
workdowg said:
Enter bios to install alternate OS's (Windows/Linux) or run from USB - Coming soon?
Click to expand...
Click to collapse
I had seen the linux was working on tablet, do you know how to achieve it?
tang1331726 said:
I had seen the linux was working on tablet, do you know how to achieve it?
Click to expand...
Click to collapse
I've seen nothing on the 1050F or any of the Android based tablets (even numbers). The Russian forum has a guide for the Windows tablets (odd numbers). I'm trying to keep up on what they are doing. I'm collecting files to help us later on...
I'm proud to have contributed to this tip section .
Note that this trip works on majority of 5.0x devices.
One question : is there a 830f version with windows, as suggests :
http://shop.lenovo.com/fr/fr/yoga-tablet-2/
It's in french but selecting 8" let me thinl there's a windows 8 version
I'd ne happy to give it a try... after having succesfully rooted my 830, as i'm stuck with the E: error
http://forum.xda-developers.com/thinkpad-tablet/general/yoga2-official-830f-lollipop-update-20-t3161448/page2
pregis said:
I'm proud to have contributed to this tip section .
Note that this trip works on majority of 5.0x devices.
One question : is there a 830f version with windows, as suggests :
http://shop.lenovo.com/fr/fr/yoga-tablet-2/
It's in french but selecting 8" let me thinl there's a windows 8 version
I'd ne happy to give it a try... after having succesfully rooted my 830, as i'm stuck with the E: error
http://forum.xda-developers.com/thinkpad-tablet/general/yoga2-official-830f-lollipop-update-20-t3161448/page2
Click to expand...
Click to collapse
Android models:
Code:
YOGA Tablet 2-830F
YOGA Tablet 2-830L
YOGA Tablet 2-1050F
YOGA Tablet 2-1050L
YOGA Tablet 2 Pro-1380F
YOGA Tablet 2 Pro-1380L
Windows models:
Code:
YOGA Tablet 2-851F
YOGA Tablet 2-851L
YOGA Tablet 2-1051F
YOGA Tablet 2-1051L
When downgrading from 5.0 to 4.4 but fails to enter into the UEFI interface, how to return from UEFI interface to the Android interface.
1, if the BIOS settings have changed, please return all changes, so you need to write down what options were changed.
2, long press the power button to shut down, press and hold the volume + and volume - and power on, enter the FastBoot mode, using data cable connection computer.
3, extract droidboot.img and bootx64 from 5.0 OTA update package, this forum post has given the web link of the firmware, please download it.
4, create a folder named “flash” in the desktop, and then put the extract bootx64 and droidboot.img into the folder, and then create a text document, input “CMD” in the text document and then save, Modify text file txt suffix for bat. Turn off all the useless software!
5, open the new text document.bat, then there will be CMD interface, input
fastboot flash osloader bootx64.efi
and then input
fastboot boot droidboot.img
6, Then the tablet into the driodboot interface, and then in accordance with the downgrade tutorial directly degraded. Be sure to remember to delete a little something in the flash-LtoKK-PVT-810.xml:
Code:
<command>
<string>fastboot erase data</string>
<timeout>120000</timeout>
<retry>2</retry>
<description>Erasing 'data' image.</description>
<mandatory>1</mandatory>
</command>
<command>
<string>fastboot format data</string>
<timeout>120000</timeout>
<retry>2</retry>
<description>Formating 'data' image.</description>
<mandatory>1</mandatory>
</command>
, and then flash flash-LtoKK-PVT-810.xml use flash-LtoKK-PVT-810.xml,
7, when flashed (flash-LtoKK-PVT-810.xml), you will find that the tablet restart card in the logo interface, neglect it and forced shutdown, then press the volume+ and volume- and power to reenter the fastboot mode,
8, and then flash flash.xml, you will return to 4.4.
Thanks Tang1331726 for this detailled tutorial !!
I'm downloading the 1.15GB file over a poor wifi link... but as I understand you are proposing me to downgrade to kitkat.
As I've never rooted my 830F before when in 4.X nor mdified the bios of it, and updated only thru OTA to 5.01 last week, I'm a little confused about what you propose me.
I should use the proposed rooting technique for 5.0
http://forum.xda-developers.com/android/development/intel-android-devices-root-temp-cwm-t2975096
Using T4 option...
don't you think ?
Thanks Workdowg for the information.
I browsed XDA and google, and ain't find any information about going from Android version to windows and back...
Too bad as my sun wants to try the lenovo concept (form factor is just perfect in my oppinion), but he wants Windows (8-( ...
tang1331726 said:
1? if the BIOS settings have changed, please return all changes, so you need to write down what options were changed.
2? long press the power button to shut down, press and hold the volume + and volume - and power on, enter the FastBoot mode, using data cable connection computer.
3? extract droidboot.img and bootx64 from 5.0 OTA update package, this forum post has given the web link of the firmware, please download it.
4? create a folder named “flash” in the desktop, and then put the extract bootx64 and droidboot.img into the folder, and then create a text document, input “CMD” in the text document and then save, Modify text file txt suffix for bat. Turn off all the useless software!
5? open the new text document.bat, then there will be CMD interface, input
fastboot flash osloader bootx64.efi
and then input
fastboot boot droidboot.img
6?Then the tablet into the driodboot interface, and then in accordance with the downgrade tutorial directly degraded. Be sure to remember to delete a little something in the flash-LtoKK-PVT-810.xml:
fastboot erase data
120000
2
Erasing 'data' image.
1
fastboot format data
120000
2
Formating 'data' image.
1
, and then flash flash-LtoKK-PVT-810.xml use flash-LtoKK-PVT-810.xml,
7?when flashed (flash-LtoKK-PVT-810.xml), you will find that the tablet restart card in the logo interface, neglect it and forced shutdown, then press the volume+ and volume- and power to reenter the fastboot mode,
8?and then flash flash.xml, you will return to 4.4.
Click to expand...
Click to collapse
To be clear. This is to fix the bios error when you upgrade to Lollipop and try to downgrade to KitKat? Also this worked on your 830F?
What's the fuss?!
workdowg said:
Known supported devices:
5) Tick "force sparcing" and change size to 500mb
Click to expand...
Click to collapse
This. I had rooted kitkat on a pal's 830LC. He update to an OTA (lollipop according to him) and got stuck in vicious boot loop. I downloaded YT2-830LC_S0184_150422_ROW and whatever I'd do, flashing system image would fail. Finally, changed force sparcing to 500MB, and suddenly, it's what's all the fuss?!? By the way, Windows 10 x64, used IntelAndroidDrvSetup1.9.0.
Thanks a ton :good:
workdowg said:
To be clear. This is to fix the bios error when you upgrade to Lollipop and try to downgrade to KitKat? Also this worked on your 830F?
Click to expand...
Click to collapse
yes, I had do it three times, all of tried are succeed
workdowg said:
To be clear. This is to fix the bios error when you upgrade to Lollipop and try to downgrade to KitKat? Also this worked on your 830F?
Click to expand...
Click to collapse
Thanks Workdowg, and Thanks tang1331726 for your patience.
My english might be incorrect, but as I per my understanding this fix is when you are stuck and only solution is downgrading from KK to LL.
My situation is somewhat different as I've succesfully ugraded, without any glitch, thanks to the timming Tip warnig (this is a gold one, I wonder how many RMA Lenovo will have to deal with !!)
My exact situation :
830-F
Lollipop OTA succesfully installed (5.01 July 10 2015)
Problem occur using SuperSU (2,40, 2,46, 2,49) after successfully booted tethered recovery.
Can you confirm me that I've to do the process described by tang1331726 to fix the E: signature error, and that I'll still be under Lollipop ?
ps: I guess there's noway to get Windows 8 or 10 on my 830F, altough 851F seems very, not to say tottally, hardawre similar.
pregis said:
Thanks Workdowg, and Thanks tang1331726 for your patience.
My english might be incorrect, but as I per my understanding this fix is when you are stuck and only solution is downgrading from KK to LL.
My situation is somewhat different as I've succesfully ugraded, without any glitch, thanks to the timming Tip warnig (this is a gold one, I wonder how many RMA Lenovo will have to deal with !!)
My exact situation :
830-F
Lollipop OTA succesfully installed (5.01 July 10 2015)
Problem occur using SuperSU (2,40, 2,46, 2,49) after successfully booted tethered recovery.
Can you confirm me that I've to do the process described by tang1331726 to fix the E: signature error, and that I'll still be under Lollipop ?
ps: I guess there's noway to get Windows 8 or 10 on my 830F, altough 851F seems very, not to say tottally, hardawre similar.
Click to expand...
Click to collapse
You are very welcome!
As far as the "E: signature error" please try posting in the Intel tethered recovery thread. Those guys should be able to help. Some people had luck by placing the SuperSU zip on the MicroSD and installing from there. Also try using the another recovery. I use TWRP on my 1050F.
We are trying to get Windows and/or Linux running on these Android based YT2's. Keep looking back here for more info...
Hi !
I have Yoga 2 830F with unusual problem, it powers on when the battery is charged, doesn't charge but shows charging , Wi-Fi grayed out, connect to pc only in fastboot mode, i have tried to flash with fastboot commands but always comes with error, i don't know correct way to flash from SD card, please help,
Many thanks!
what android version do you have? kitkat or lollipop?
and while you answer read what you can on how to reflash the stock rom on 830F using the intel phone flash tool in DNX mode
oh boy...
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
So today I was trying to update my Yoga with YT2-830LC_S100064_150710_ROW_KKtoL, as I had KitKat 4.4.2 and wanted Lollipop due to the fact that some apps from Play Store are not accessible to KK users. Why did I use fw for 830LC while I have 830L? It's because in the past it was flashed with fw just to get the access the call functionality.
I followed all the steps from that russian site while flashing it via Phone Flash Tool, but after receiving two notifications "cannot remove /cache/fastboot.tmp" the flashing process failed. I tried to flash it once again, but nothing happened, so I disconnected Yoga.
It seems that the Droidboot has been totally removed, as I can't access it and the only information after turning it on is "press esc in 1 seconds to skip startup.nsh Shell>".
It's possible to enter the FastBoot and DNX mode, but when I try to flash it once again I get the error "wrong device state".
I even tried to restore the bios using restore-kitkat-bios-830-1050-v2, but it's getting stucked at "Preparing to push files".
Any ideas how to restore the bios and make it work again?