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[How-To] All-In-One Guide For Yoga Tablet 2[Closed]

@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
deleted

Yoga Tab 2 (830,1050,1380) - unlocking the bootloader
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Partition layouts
deleted

AoL - Android ON Linux
deleted

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...

(n8000) Stuck at Samsung Logo, possible fix

I'm having this problem past few days, tried all the links in the Q/A section, dev.. all links were dead.. and managed to found solutions for this problem.
Basically, the tab will stuck on "Samsung" logo and looping for eternity... tried to reflash the rom, wipe system and everything via odin.. will results the same thing...and I thought I'm gonna say good bye forever for my note 10.1 (n8000)...or send for repair (which samsung quoted me ~ $158 for the "board replacement"... but until I found how to get it alive... actually I've no idea what causing my n8000 stuck in the first place..
After a whole day "intensive" searching and everything.. almost all files links in xda were dead.. and finally I found out all the files and solutions..
What you'll need
> Odin 3.xx, can get from samfirmware website
http://www.sammobile.com/firmwares/download/30977/N8000XXUDNE5_N8000OLBDNE3_XME/
> Samsung drivers
http://forum.xda-developers.com/showthread.php?t=961956
> note 10.pit and efs (extract the efs.rar after download, yes it's i9300 but can be used)
> n8000 rom, can get from http://www.sammobile.com/ or development section. I prefer flashable rom in recovery such as android revolution HD, and place it in microsd.
> Philztouch CWM
(files as attached)
Steps to do the recovery
1. Download odin and extract
2. Download drivers and install.
3. Run Odin, place the following files
- click the PIT button, select the note10.pit.
- click the CSC, and select the previously extracted efs.rar..it should be efs.tar now
- click on AP, for custom recovery, such as philz.. or official rom..up to you.
4. Tick the following menus in Odin
- Re-Partition (optional, some users said no need to tick this would do as well)
- Phone bootloader update
- Phone EFS clear
5. Place your n8000 in download mode, and connect via USB.
6. Click on START button.. and hopefully success.
7. Once finishes, reboot into recovery mode (those who flash rom via Odin can skip this), and install the rom zip file.
Everything should be fine now and your n8000 should able to start properly... that's how I managed to "resurrect" my n8000 tho... hope these helps... mine was n8000 16GB, 3G/Wifi version

What is decription key for Mega download?

What is decription key for Mega download?

Also need the description key for the MEGA Downloads please.

description plz

sorry for didnt notice the replies, not sure why my notifications were off.
will reupload again later this, since mega kinda blocked my account details :s

Attached the related files...seems cloud storage failing on me..

Hi there!
I'm new to this and need help understanding what to install under Step 2, which is downloading and installing of Samsung drivers.
I have already unzipped the Samsung driver file but I don't seem to see any installation files. Do I have to plug in my Note to get to this? Or are they installed onto the computer first?
Many thanks, as this could potentially save my Note and save me $500... :fingers-crossed:

boootloop problem
tried all this ,but still my n8000 did not flash through odin properly but failed with error
'Repartition operation failed'

After running odin it says "reset" then the tablet returns to the "Galaxy note 10.1" logo and cycles going black then showing the logo.
When I hold down the power button it shuts off and turns back on again. So no luck for booting into recovery.
Im 99% i'm doing all the steps right.
Thank for your help.

ipoddude95, I have same problem. I tried different computers, different cable, different versions of odin to flash different versions of stock roms. but no success so far...

Similar problem
Hi,
I've got similar problem and I check couple of methods to solve this, unfortunately none was successful.
I tried method described in this thread, but was not successful.
I have old version of TWRP recovery (2.5.0.0). I can load recover but whatever I try to do - clear cache, format data, install recovery using dd it finish with error.
I tried installing new recovery twrp and philz using odin, using heimdall, everything seems to be ok, but when I try to load recovery I've got couple of restarts and then old TWRP loads. I've tried stock firmware, custom, with repartition and without.
I'm guessing that in my case it could be some kind of physical problem with memory.
What I can check more or what to try? How can I determine whether problem may be physical with rom memory?

shaikhmdjohar said:
tried all this ,but still my n8000 did not flash through odin properly but failed with error
'Repartition operation failed'
Click to expand...
Click to collapse
try different port
weird those how i fixed 2 of the n8000, later on will try on my tab again once i got my tab back from my friend

ipoddude95 said:
After running odin it says "reset" then the tablet returns to the "Galaxy note 10.1" logo and cycles going black then showing the logo.
When I hold down the power button it shuts off and turns back on again. So no luck for booting into recovery.
Im 99% i'm doing all the steps right.
Thank for your help.
Click to expand...
Click to collapse
try go to download mode, and reflash recovery

gamesky said:
try go to download mode, and reflash recovery
Click to expand...
Click to collapse
I have, instead of just showing the initial "galaxy note 10.1" screen it goes to the "Samsung" logo with the animation and cycles through that. Still can't get into recovery.
thanks for the help

Hello, i have also this issue with the galaxy note 10.1 gt-n8020, its stucks on samsung logo and doesnt go any further...i dont have a custom firmware neither the tablet its rooted, i tried with odin having the original firmware but when i press start, after the msg "Start write to NAND" i get a FAIL and ends there. Even with the method mentioned here, still i get the FAIL msg...any Info on this on what might be the cause and maybe a possible fix?Can this be also hardware related malfunction?I cant go into recovery mode, only download mode works...

Thank you for the help, my Samsung note 10.1 note went on boot loop about a year ago , i tried so many different ways to flash it and nothing worked. finally got it working with your help.
only problem i encountered was wen i click on (AP, for custom recovery, such as philz.. or official rom..up to you.) it didnt allow me to put the downloaded file in so i used (i9300_repair_efs.tar)
and it worked..
THANK YOU

You Sir are a pinnacle of evolution! Stumbled on this thread by error while going trough history links in my browser and all of a sudden my brick turned to Galaxy Note 10.1!
Only note, I've used i9300_repair_efs.tar for AP like farhaanwireless suggested and device is restoring as I type this
Thanks a ton once more

Agyar said:
You Sir are a pinnacle of evolution! Stumbled on this thread by error while going trough history links in my browser and all of a sudden my brick turned to Galaxy Note 10.1!
Only note, I've used i9300_repair_efs.tar for AP like farhaanwireless suggested and device is restoring as I type this
Thanks a ton once more
Click to expand...
Click to collapse
Can you tell us exact steps you did? Because I am trying without success :\
Also another thing: the i9300_repair_efs.tar it's a rar and when extracted I get a directory with a .md5 file... Is that file that are you using?

Yes, that md5 was used.....
I've went completely by procedure described in first post, with exception of i9300_repair_efs change as mentioned. For that part, I've used latest Odin downloaded from Samsung web, and for bootloader, I've used Odin 3.05, just to be sure, since there is a button with "Bootloader" written on it

[CLOSED]Yoga Tab 2 (830, 1050, 1380) - get back to KitKat

@MikeChannon removed OP. please close
what? lol

Yeeha! You are the magic man....

workdowg said:
Yeeha! You are the magic man....
Click to expand...
Click to collapse
He truly IS the man. Helped me out BIG style.

ionioni said:
READ CAREFULLY AND BE WARNED BEFORE ANYTHING:
THIS CAN HARD-BRICK YOUR DEVICE AND I TAKE NO RESPONSIBILITY FOR THAT!
use it only if you must or not at all
you can read this for some details about what bricks are so you understand what you can get into
this is for all Yoga Tab 2 models 830, 1050, 1380 (regardless of the submodel F,L,LC)
it restores(downgrades) your bios firmware from whatever Lollipop version to the original/genuine one from the latest KitKat stock rom released by Lenovo (and all the latest KitKat stock rom's have 150422 in the rom filename, ie April 15, 2015 and nothing not even minor OTA's were released after this date for KitKat, next ones upgraded KitKat to Lollipop)
useful to:
1. those who want to return back to the KitKat stock rom from Lollipop (if you simply flash back the KitKat stock rom files and you are still on Lollipop bios firmware you will softbrick as the Lollipop bios is a x64 version while the KitKat loader/kernel are ia32 so you will get stuck at efi shells, bios screen etc)
2. those who took the Lollipop OTA, succeded, but had in time problems (bricked their device) and cannot flash a Lollipop stock rom as they don't have one (not being released by Lenovo/available yet and at least some 830 and 1380 models are in this situation), so they must flash back KitKat stock rom and after take the OTA to Lollipop (and the KitKat flashing part put's them in the same situation as those from p1.)
3. those who tried to take the Lollipop OTA and had problems and they tried to flash KitKat stock rom and yet they are failing (this could be due to problems in the updating while OTA was applied, yet could be that their bios firmware was updated to Lollipop version)
4. those who want to test stuff (going down/up between versions) ... you name it...
how to use it:
1. first download and extract the corresponding tool for your device (830 and 1050 models share the same bios firmware so they have a common tool), while at this you can watch the little attached recording i made with the tool restoring the bios for my 1380F tab so you know what to expect when you run it. USE THE TOOL THAT MATCHES/CORRESPONDS TO YOUR MODEL, you can hard-brick if for eg you use the 1380 one on a 1050 model (didn't even tried but nothing good can happen)
2. place your tab in the DnX mode: power off (by force if you have to), press and hold both VolUp and VolDown butons, keep them pressed, now press Pwr to start and release Pwr when it turns on/buzz (but keep holding pressed Vol buttons), in a few seconds your screen will display "Fastboot starting..." and it will hold on that, now you can release the Vols (you are in DnX mode). you must get that message, try again the whole sequence until you succed, don't move on until you have that "Fastboot starting..." on your screen.
3. run the tool (you must have the intel drivers installed, if you flashed to your tab at some point you should have them already), follow the messages i think it's quite easy and straightforward, in a few minutes you will be done and having a brand new kKitKat bios firmware on your tab
(3) if while running it hangs on the "Preparing to push files..." message, and your tab starts to the whatever error message you had before it means that you already have a KitKat bios (the tool works only with the Lollipop bios firmware) so you don't need to restore the bios, you can flash stock KitKat rom directly (in this scenario the tool doesn't modify anything on your tab)
4. when it finishes the tool will automatically reboot your tablet, leave it for a few seconds to start (it will most likely go ninto some efi shell, or bios screen whatever your old files were) afterwards turn it off (long press Pwr) and that's it
5. you can now start in DnX mode again and flash your stock KitKat rom (this step is quite known by now so i won't detail it, there's a lot of info on that in other threads), take OTA's, eat candies... whatever you like
i must warn you again, while i tested this tool (i think i moved from KitKat to Lollipop and back at least 20 times and never had any issue with it) you are the only responsible if something bad could happen, this is playing with bios (and any mistake will hard-brick your tab so you will have to send it to a service for fixing). make sure you have enough battery (while i used the tool even when i was with 5% on my battery i would not recommend, i say at least a 30-40%, the process runs only for 2-3 minutes so that should not be an issue). and of course once it started the flashing DO NOT EVEN THINK OF INTERRUPTING! (you could close other software on your PC that maybe can hang your computer while flashing.. you got the point)
Good Luck!
edit: i already have messages about successful bios restoring (as expected no? ) but failing on completing the OTA to Lollipop update after flashing anew the KitKat stock rom. to them and to all of you people who are going to Lollipop from your newly flashed stock KitKat: SET YOUR COUNTRY CODE!!! after you flash back stock kitkaton the first boot input ####6020# in your contacts and a dialog will pop from which you MUST choose a country (no matter which one, preferably yours or a close one), then after the tab reboots for updating the region and comes back to Android check that you have a country code set by entering #### 59930# and it should show the code you chosed. if you take the OTA without a country set you will FAIL! if you failed on your OTA to Lollipop flash anew the stock KitKat rom and set the country code
also do not take an OTA if your device is rooted, always UNROOT first then take the update, and you can root back after or just don't root until you finished the whole Android installing and OTA updates
Click to expand...
Click to collapse
thank you! i had the boot to bios problem after trying some not-smart things. after spending an hour on the phone with lenovo this morning getting a repair authorization, i printed out the label. i don't need to send in my 1380f now.
your app fixed that and i was able to flash to kitkat and then upgrade to lollipop.

Works perfect! Thanks!

daWyrd1 said:
thank you! i had the boot to bios problem after trying some not-smart things. after spending an hour on the phone with lenovo this morning getting a repair authorization, i printed out the label. i don't need to send in my 1380f now.
your app fixed that and i was able to flash to kitkat and then upgrade to lollipop.
Click to expand...
Click to collapse
yeah... the guys at Lenovo deserve a break, they have such a beautiful daadeedaadoo sound on the boot animation (that one cannot even disable it )
bisti2004 said:
Works perfect! Thanks!
Click to expand...
Click to collapse
Pentru putin

Mersi Dorin!

My 1050F cannot boot for long time, I posted the problem(http://forum.xda-developers.com/thinkpad-tablet/general/help-1050f-dead-t3188696) but no one answered me. Today I was very excited to find this post and read it carefully, then tried to do it. But just after the sending progress started (the "xx%" progress began)for about 10 seconds, the program "restore-kitkat-bios-830_1050" vanished(Maybe forced teminated by Windows? I ran the "restore-kitkat-bios-830_1050" after a new reboot of Windows). I waited for about 3 minutes, the "restore-kitkat-bios-830_1050" program still didn't appear, and the tab hanging on a normal picture ( I don't remember, probably a recovery stage picture? but I remember the last line is "the result is Okay"). So I had to disconnct the tab from the computer, and powered it off. Then I try to power it on, but sadly find it cannot boot to any screen. In a dark room, I find the backlight of the tab is on when I pressed the power button, but there is no text or picture on it, regardless of whether I press the power button independently, or press the power button together with any volume button(s).
Now the tablet seemingly has changed into a REAL brick (or hardware brick?). How can I rescue it? The only way is to send it to a service?

aerofisher said:
My 1050F cannot boot for long time, I posted the problem(http://forum.xda-developers.com/thinkpad-tablet/general/help-1050f-dead-t3188696) but no one answered me. Today I was very excited to find this post and read it carefully, then tried to do it. But just after the sending progress started (the "xx%" progress began)for about 10 seconds, the program "restore-kitkat-bios-830_1050" vanished(Maybe forced teminated by Windows? I ran the "restore-kitkat-bios-830_1050" after a new reboot of Windows). I waited for about 3 minutes, the "restore-kitkat-bios-830_1050" program still didn't appear, and the tab hanging on a normal picture ( I don't remember, probably a recovery stage picture? but I remember the last line is "the result is Okay"). So I had to disconnct the tab from the computer, and powered it off. Then I try to power it on, but sadly find it cannot boot to any screen. In a dark room, I find the backlight of the tab is on when I pressed the power button, but there is no text or picture on it, regardless of whether I press the power button independently, or press the power button together with any volume button(s).
Now the tablet seemingly has changed into a REAL brick (or hardware brick?). How can I rescue it? The only way is to send it to a service?
Click to expand...
Click to collapse
i've seen the post with the problem you had, now the thing is on a "normal" bricked tablet (meaning soft bricked one) your tab never hangs at the screen to which you're referring to (Powered by Android) it will always move on (to some error message, bios etc). the same tool was used by me and others (including for your 1050F model last one I recall is @Einwood) and never had issues (until now) so imo it's very unlikely that the problem was from the tool (it's task is quite simple and don;t see what could go wrong) something interrupted the flashing process. also you said you tried both lollipop and kiktkat rom flashing and failed and at least one of them should have worked (the roms are flashed using bios dnx as start) so the issues are with your tab hardware most likely.
but all that is irrelevant now... if it doesn't boot at all and you cannot get it to show ANY message at all (white Lenovo logo doesn't show up when you power on nor does it buzz when pwr on) then service is the only solution
@ The Others: please post your tab model too when posting

Thank you so much for such detailed analysis, but I cannot figure out why the hardware has problem. Yes, now it cannot show ANYTHING, white Lenovo logo doesn't show up nor does it buzz when pwr on. Anyway, I think I have no choice except the official repairment now.
I'm trying to find the LENOVO service sites in Canada, but their Canada official site has no such information, on the contrast, its website is full of sale/order/payment information. I think I should re-think about this company.
Thank you again for the reply.
ionioni said:
i've seen the post with the problem you had, now the thing is on a "normal" bricked tablet (meaning soft bricked one) your tab never hangs at the screen to which you're referring to (Powered by Android) it will always move on (to some error message, bios etc). the same tool was used by me and others (including for your 1050F model last one I recall is @Einwood) and never had issues (until now) so imo it's very unlikely that the problem was from the tool (it's task is quite simple and don;t see what could go wrong) something interrupted the flashing process. also you said you tried both lollipop and kiktkat rom flashing and failed and at least one of them should have worked (the roms are flashed using bios dnx as start) so the issues are with your tab hardware most likely.
but all that is irrelevant now... if it doesn't boot at all and you cannot get it to show ANY message at all (white Lenovo logo doesn't show up when you power on nor does it buzz when pwr on) then service is the only solution
@ The Others: please post your tab model too when posting
Click to expand...
Click to collapse

aerofisher said:
Thank you so much for such detailed analysis, but I cannot figure out why the hardware has problem. Yes, now it cannot show ANYTHING, white Lenovo logo doesn't show up nor does it buzz when pwr on. Anyway, I think I have no choice except the official repairment now.
I'm trying to find the LENOVO service sites in Canada, but their Canada official site has no such information, on the contrast, its website is full of sale/order/payment information. I think I should re-think about this company.
Thank you again for the reply.
Click to expand...
Click to collapse
sorry about your issue, yet repairing should not take long, maybe @workdowg can guide you more as it had a similar problem and was solved very fast (6 days if i recall) sending through fedex on lenovo's expenses.

aerofisher said:
Thank you so much for such detailed analysis, but I cannot figure out why the hardware has problem. Yes, now it cannot show ANYTHING, white Lenovo logo doesn't show up nor does it buzz when pwr on. Anyway, I think I have no choice except the official repairment now.
I'm trying to find the LENOVO service sites in Canada, but their Canada official site has no such information, on the contrast, its website is full of sale/order/payment information. I think I should re-think about this company.
Thank you again for the reply.
Click to expand...
Click to collapse
http://bfy.tw/2gNc (just having fun) it is the one that says phone support.
ionioni said:
sorry about your issue, yet repairing should not take long, maybe @workdowg can guide you more as it had a similar problem and was solved very fast (6 days if i recall) sending through fedex on lenovo's expenses.
Click to expand...
Click to collapse
Yes, once i talked to them (about 5 minutes) they emailed me all i needed and i just had to find a local fedex dropoff center. They boxed it and i got it back in 6 days.... this seems to be a common thing for them....
Sent from my YOGA Tablet 2-1050F using Tapatalk

Yoga Tab 2 (830, 1050, 1380) - get back to KitKat
You are my lifesaver and I just can not thank you enough @ionioni
how can you make a file like restore-kitkat-bios-1380.zip ??!! you are such a genius !! :good:
We will never be able to flash it back to KitKat Bios without this zip file !! :crying:
But why don't we need to flash it back to Kitkat Bios on my Samsung Note 3, S5, Note 10.1 (2014 version) and Nexus 9 ?!!
thank you very much for your hard work again and keep up the good work pls

this was on my inbox and it should continue publicly maybe others can benefit
KainXSS said:
I'm wondering what your flashing to the tablet with your tool, I have a Lenovo S8-50F and lollipop is pretty abysmal on it, so I'm wondering what your flashing to downgrade the bios so I can try it on the S8, since its very very similar to the 830.
Click to expand...
Click to collapse
you should NOT use the tool unless it is made exactly for your model, or you most likely will hard-brick. moreover Lenovo uses an in-cpu module for digitally checking the authenticity of the firmware you have on your board at pwr on time and even if you have a bios that would work on your model if it is signed with another key it will cause a hard-brick (the measured boot module will refuse to load the IBB in the new bios).
for eg if one writes the 1051 windows variant of bios on the 1050 android one (they are identical in hardware) it hard-bricks (tested).
send me a link to the latest KK stock rom for your device and i will check on it.

That is what happend to me. My loved 1380f is hard-bricked. Only the white lamp is blinking and it doesn't turn on anymore.
Is there a possibility to repair it or can i throw it in the garbage? Please give me an advice. Thank you very much.

bombolota1 said:
That is what happend to me. My loved 1380f is hard-bricked. Only the white lamp is blinking and it doesn't turn on anymore.
Is there a possibility to repair it or can i throw it in the garbage? Please give me an advice. Thank you very much.
Click to expand...
Click to collapse
not so much you can do, the hardware is fine, it just got the wrong firmware in it... somehow you must rewrite the bios but you cannot do that from the outside (ie by software means) without being able to boot at least in DnX mode. you can check quickly ... if after you PwrOn (well.. after you long press Pwr button as at this moment Powered On of Off are werid concepts ) you don't get NOTHING on your display (ye not even the Lenovo -> Powered by Android white/black logo) than that's it (try maybe to see if somehow DnX didn't got hooked by entering a fastboot devices and see if by some miraccle you don't see your device there)
your device must be opened by a repairing service tech (especially if he is on warranty), you could do it yourself (i did) but you need the appropiate tools and know/how otherwise from a hard-bricked yet recoverable (the hardware is ok) you will transform it into just a paper holder

updated kitkat bios restore tool to version 2 (foolproof version). read the main thread post at the beginning.

Good morning.
Please let me introduce my situation. I use Lenovo Yoga tablet 2 Pro. On 9-th of november I updated Android to 5.0.1. Unfortunately, one of my commercial aps now can not make a connection with external device (no appropriate information about USB connection is appeared).
I am affraid the problem lies on the Android 5.0.1 system. Before that everything had worked perfect.
That is way I decided to downgrade to the Androix 4.x.
I found above treads, but have some doubts.
Is above tool downgrade my system to Android 4.x or do I need to do some additional operations, to get back to the Android 4.x?
In the section - how to use it (point 5) we can read:
5. you can now start in DnX mode again and flash your stock KitKat rom (this step is quite known by now so i won't detail it, there's a lot of info on that in other threads), take OTA's, eat candies... whatever you like
Click to expand...
Click to collapse
Can you give me some more detalis (links about that?)
Kind regards from Poland
Pietia.

pawlikp100 said:
In the section - how to use it (point 5) we can read:
Can you give me some more detalis (links about that?)
Kind regards from Poland
Pietia.
Click to expand...
Click to collapse
you must:
1. Downgrade the bios using the restoring tool (you mention "Yoga Tab 2 Pro" so you must use the 1380 version), and you must do that so you can flash KitKat stock rom on your tablet (if you try to flash directly, without the bios downgrade it will fail and you will soft-brick your tablet)
2. After restoring the bios, download from here your stock KitKat rom and extract
3. Flash using Intel Phone Flash Tool (open with it the "flash.xml" from the target_bin directory of the extracted archive). the Intel Tool can be found in the tools directory of the same extracted archive.
4. After you finished sotck KitKat flashing, remember to set your contry code (####6020# in Contacts), also it's not necessary to make your settings wifi etc before you set your country code as they will anyway going to be deleted (a factory reset is performed on country code setting operation). if you don't set a country code you will fail when upgrading to Lollipop.
5. Update using the Lollipop OTA or stay on KitKat

Thank you for explanation.
I download system, installed Phone Flash Tool, open it and chose flash.xml, but after connecting my YT2Pro I can not see device specific with "Start to flash" button in the Device list area of the program.
see below screen. Is this screen looks as it should? (ups, unfortunately I can not post images, because I am new user).
One more thing, tablet should be turned off during flashing?
Right now my tablet is connected to the laptop by USB. It is not switched off and charging is in progress (laptop does not see my tablet as an additional disc/device).
Is above status correct?

Tablet lenovo yoga 10 B8000-F not booting

Hi,
I have been successfully running Android 4.4.2 rooted on my tablet Lenovo Yoga for a while (see http://forum.xda-developers.com/showpost.php?p=59609647&postcount=178 ).
Yesterday unfortunately, the tablet is stuck on boot.
Turning it on, it displays LENOVO logo on the screen but then the logo stays there and nothing happens.
(I left the tablet on for more than 15mins, nothing, only LENOVO yoga always displayed on the screen).
Turning it off and connecting the usb cable, the tablet screen wakes immediately up and displays always (no animation!) the battery icon with the red lightning inside.
I can access recovery mode and wiped cache, then rebooted, still same problems.
Any help? What could the causes be?
Thanks a lot.

UPDATE: I tried a factory reset but I problably switched it off before it was completed (the screen was dark - not sure).
Now it boots, it shows LENOVO logo, then the android robot with ERASING... and after a few minutes it reboots and it's stucked in this loop (LENOVO logo -> android ERASING -> reboot)...
How can I fix it?

Can you get a copy of the original ROM and flash to the tablet,using something like this. http://forum.xda-developers.com/showthread.php?p=48915118#post48915118
Maybe this site might be of help if you can get the needed files. http://techbeasts.com/useful-adb-and-fastboot-commands-and-how-to-them/2/

corasman said:
Can you get a copy of the original ROM and flash to the tablet,using something like this. http://forum.xda-developers.com/showthread.php?p=48915118#post48915118
Maybe this site might be of help if you can get the needed files. http://techbeasts.com/useful-adb-and-fastboot-commands-and-how-to-them/2/
Click to expand...
Click to collapse
Thanks for your useful answer!
I managed to download B8000_A422_000_085_140402_WW_WIFI rom but this is a folder (not a flashable zip file via sdcard) that has to be flashed via Smart Phone Flash Tool software.
I tried to use FlashTool, but FlashTool does not recognize my tablet (drivers should be OK) and therefore install the rom or do anything on the tablet
Do you know where to find a flashable zip rom for Lenovo 10 tablet so that I can try to flash it via sdcard?
Cheers.

[.::MDT::.] said:
Thanks for your useful answer!
I managed to download B8000_A422_000_085_140402_WW_WIFI rom but this is a folder (not a flashable zip file via sdcard) that has to be flashed via Smart Phone Flash Tool software.
I tried to use FlashTool, but FlashTool does not recognize my tablet (drivers should be OK) and therefore install the rom or do anything on the tablet
Do you know where to find a flashable zip rom for Lenovo 10 tablet so that I can try to flash it via sdcard?
Cheers.
Click to expand...
Click to collapse
Is this of any help to you. https://aluk4rd.wordpress.com/2014/...lenovo-yoga-tablets-8-and-10-b6000-and-b8000/

corasman said:
Is this of any help to you. https://aluk4rd.wordpress.com/2014/...lenovo-yoga-tablets-8-and-10-b6000-and-b8000/
Click to expand...
Click to collapse
Ah ah I was checking the same website! Thanks!
Keep you posted

Thank you everybody, I managed to install 4.2 Android stock again, then update to 4.4.
A hint if someone will have my same same problem (pink lines but no yellow bar in the flash tool, so the flashing process did not start).
I solved it by pressing once shortly the power button on the tablet (then the yellow lines appeared and the flash process began and completed successfully!).
UPDATE: see this link to switch from Chinese to other language https://forums.lenovo.com/t5/Lynx-M...CION-YOGATABLET-8-10-B6000-B8000/ta-p/1761767

Thanx for guide!!

---------- Post added at 08:34 AM ---------- Previous post was at 08:28 AM ----------
[/COLOR]Bumping an old thread rather than starting a new one, because this is exactly what my tablet started doing. I only use it for reading, so when it first started acting up I tossed it on the shelf and figured I'd fix it later. Now I want to read, and I find myself digging around in here. Apparently I'm to stupid to follow the directions for any type of flash involving my computer SP doesn't show me the scatter file I need in my firmware directory. I'd really love to just toss this onto a micro SD and flash it the old fashioned way! Barring that, some dummy proof instructions. I haven't flashed since my old S5, and this device is even older than that so I should be able to get this done. It's really annoying me that I can't. TIA for any help.

Unfortunately my Lenovo Yoga, after 4 years, died... :'(
See https://forum.xda-developers.com/showpost.php?p=77996238&postcount=61 for details.
If anyone has a solution please let me know, tx a lot!

Lenovo Yoga Tab 2 1050F - Boot Failed. EFI Hard drive

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)