yashsingh1/xdaforums huggingface dataset:
[Thinkpad Tablet General] workdowg:
I don't use Windows so when I use the phone tool I did it inside of a VirtualBox machine image of Windows 8.1. I had no problems with the drivers listed here, but others had issues and had to get updated drivers from Intel website. Check device manager and see if the phone is recognized.

Also, make sure to recheck my post because I updated a warning about using the wrong XML file when you flash it.

From my LG-G3 running Jasmine8.0/Skydragon Kernel 4.2
[Thinkpad Tablet General] kurtkombajn:
Done!!!Thanks!!!

I downloded new driver and it works.

IntelAndroidDrvSetup1.9.0.zip
[Thinkpad Tablet General] workdowg:
Thanks. I updated the tools in the posts to ver 1.9.0. yogatablet2-flash-tools-20150812.7z
[Thinkpad Tablet General] tang1331726:
[MENTION=4821597]social-design-concepts[/MENTION] [MENTION=6843137]Yosha1[/MENTION]@workdowg

I have found a simple new way to enter UEFI, which only（I think） applied in 4.4.2 version in yoga tablet 2 830F, I think it’s also useful to S8-50

http://xdaforums.com//thinkpad-tabl...a-tablet-2-t3174597/post62283135#post62283135

I also find 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.

http://xdaforums.com//thinkpad-tablet/general/how-to-one-guide-yoga-tablet-2-t3174597/post62248104

Now I'm entering the UEFI interface, but I'm not able to use HUB USB to identify the external USB stick and keyboard and mouse, and it is not capable of loading android-5.1.0_r1-ia0-minnowboard_max-64bit-fastboot-usb.img( http://xdaforums.com//thinkpad-tablet/general/something-interesting-t3147715/post62003513 ) and windows or Linux in FastBoot mode, do you have any way to help me load this boot ？
[Thinkpad Tablet General] workdowg:
I'm not sure what to about it. But I just got a different powered usb hub and I will try later on my 1050F. You have the 830F, correct?

From my LG-G3 running Jasmine8.0/Skydragon Kernel 4.2
[Thinkpad Tablet General] tang1331726:
yeah, 830F
[Thinkpad Tablet General] stanceski:
Hello workdowg, did you heard by any chance where could be downloaded the chinese version for YT21050LC: yt2-1050LC_USR_S100067_1503180711_WW52_CN?

Thanks for your time
[Thinkpad Tablet General] tang1331726:
http://pan.baidu.com/wap/link?uk=2335146322&shareid=3198867806&third=0

http://pan.baidu.com/wap/link?uk=2335146322&shareid=2523900938&third=0
[Thinkpad Tablet General] stanceski:
Thanks Tang for the links.

I have a question:

Can I flash the lollipop version (OTA full vers.) directly (through flash tool) or it's have to be done through recovery procedure (after installed KK vers. from first link)?
[Thinkpad Tablet General] pateken:
Guarda "Lenovo Yoga 2 tablet dual boot" su YouTube

https://youtu.be/cb8Yt89g4Yw
[Thinkpad Tablet General] workdowg:
Saw that before. It is from the Russian mobile forum. He is using the 1051F - that the Windows version... I was trying to decipher his tutorial to see if it could be used on the 1050F...

From my LG-G4, Rooted running Stock 5.1
[Thinkpad Tablet General] timberfx:
Hi,

I wonder what the password for the "YT2_10_prc_call-blankphone-user-YT2-1050LC_USR_S000117_1501091537_WW21_CN" archive is. I tried "bbs.lenovo.com", but, no go!
[Thinkpad Tablet General] stanceski:
Password for LC chines ROM: bbs.lenovomobile.com

---------- Post added at 10:49 AM ---------- Previous post was at 10:36 AM ----------
[Thinkpad Tablet General] timberfx:
Thanks, but that password isn't it either.
[Thinkpad Tablet General] tang1331726:
may be is club.lenovo.com.cn
[Thinkpad Tablet General] timberfx:
Yes, thanks. That was the magic word!!!!
[Thinkpad Tablet General] estol:
Hello there,

I was trying to update my 1050f to Lollipop via the system update method, but every time I tried I got a blue 'X' in Lenovo Recovery, saying that update failed, and no other information about what has failed exactly.

I booted the machine in CWM with the IntelAndroid FBRL and tried to install the update.zip with this tool. The installation still failed, but at least now I have an error message:

file_getprop: failed to stat "/factory/easyimage_cc": No such file or directory

Prior to this, I got another error message:

mount: failed to mount /dev/block/platform/intel/by-label/factory: Device or resource is busy

Now, if this was a regular Linux machine I'd look for the culprit what is keeping the device busy, but - while still in CWM - I opened an ADB shell to the device, and I see that the block device is already mounted.

The contents of the directory support the latter error message, it contains several files, and a directory, but easyimage_cc is not present.

Anyone seen something like this, or has any idea how to fix this?
[Thinkpad Tablet General] timberfx:
If you have an ext. sd in the device, try your update without it. I have had similar problem when I had an ext. sim in my 1050L.

---------- Post added at 04:37 AM ---------- Previous post was at 03:46 AM ----------

Corrrection: I have had similar problem when I had an ext. SD in my 1050L.
[Thinkpad Tablet General] estol:
Hi

My device is a 1050F, and I did not have an sd card at the time I tried.

Going to try with a memory card, maybe even installing from the memory card.

Thank you for the tip!
[Thinkpad Tablet General] leechseed:
First do whats written in #3, then the intern system update should work. Thats what i did as i had the same error in lenovo recovery.

I also did it WITHOUT sd card.

Btw i got the 1050L
[Thinkpad Tablet General] workdowg:
If you were rooted you need to follow this post - http://xdaforums.com/showpost.php?p=62237376&postcount=3
[Thinkpad Tablet General] estol:
I tried Plan A from the "Repair bios error after downgrading from Lollipop to KitKat"

There is no bootx64.efi in kitkat-YT2-1050F_S0198_150422_ROW.7z. However, there is an efilinux.efi. Should I try to flash that?

By the way - just to provide some more information - my device was never rooted, as in I never rooted it. Bought it last november, used it for a month, then the accelerometer died. Repairs took nearly three months. After I got it back the OS wasn't the original 4.4.2, it was a 4.4.4.
[Thinkpad Tablet General] estol:
Did everything from Plan B, to no avail.

Trying Plan C now, but there is a non-trivial merge in step 5. I am supposed to merge the content of target_bin with the contents of 1050F_Recover_from_5.0_downgrade_bios_error. Both directories contain a droidboot.img.

There is this line "** Note bootx64.efi and droidboot.img are from the 5.0 OTA **" but since neither archives were previously refered to as 5.0 OTA I still can't decide. Although there were no bootx64.efi in the YT2-1050F_S0198_150422_ROW archive I'd assume the droidboot.img should come from the downgrade package.

Could someone clarify this?

----

Update: I tried A, B, and C. Whenever I try to install the OTA update I get install failure. Guess this is the last straw for this device.
[Thinkpad Tablet General] workdowg:
I'll update the op with some clearer files

Sent from my YOGA Tablet 2-1050F
[Thinkpad Tablet General] leechseed:
[MENTION=3296184]estol[/MENTION] did you also tried whats written in post #3?

Same with screenshots but german language: http://www.android-hilfe.de/index.php?posts/8998077
[Thinkpad Tablet General] QuazIqbal:
Can somebody please share esp.zip extracted from kitkat build of any yoga tab 2 device?

Sent from my YOGA Tablet 2-830LC
[Thinkpad Tablet General] QuazIqbal:
Guys after updating to lollipop, I am facing a weird 'sim not ready' error, no mobile netrwork appears nor the setting of mobile network is configurable, no data(2g,3g,4g) no voice call support.

When i insert sim card it shows sim added notification, also telecom stk app shows that sim has been read,

but still I am unable to figure it out why the goddamn network doesnot shows up? Btw wifi is working nice.

Is any body also facing same issue? What causes this error?Any help to resolve this will be much appreciated.

P.S. I am in good network and I have also tried different sim cards but no luck so far....

Sent from my YOGA Tablet 2-830LC
[Thinkpad Tablet General] tonyp:
Great post that will hopefully be useful for a lot of people as previously one had to collect the information out of different threads.

I've requested the post to get stickied :good:
[Thinkpad Tablet General] Wicked4u:
Is there going to be a 5.1 update?
[Thinkpad Tablet General] :
nothing here
[Thinkpad Tablet General] QuazIqbal:
Really brother it feels like being prisoned ?

Voices must be raised....

I think you should share this message on each forum related with Yoga series.

Sent from my YOGA Tablet 2-830LC

---------- Post added at 06:15 PM ---------- Previous post was at 06:12 PM ----------

Good start.

Can you please open a poll in favour/ against unlocked bootloader of yoga series, hopefully one day it will change the minds of Lenovo Yoga makers...

Sent from my YOGA Tablet 2-830LC
[Thinkpad Tablet General] Wicked4u:
Free yoga tablet... :)
[Thinkpad Tablet General] workdowg:
Free

THE

yoga tablet... :) ?
[Thinkpad Tablet General] workdowg:
New poll!

Unlock the Yoga Tablet 2 series bootloader!
[Thinkpad Tablet General] :
i vote NO (need to) :)
[Thinkpad Tablet General] pateken:
I want to install windows on yoga 2 Android 1050L. you need to unlock the bootloader. I have to follow as a guide.? thank you
[Thinkpad Tablet General] :
take you tablet and place it face down.

on top of it put a laptop (i guess desktop central unit would do too... but be careful not to be very heavy)

insert a bootable windows dvd/usb in the laptop

install windows

there you go... successfully installed windows ON yoga 2 Android 1050L

joke aside:

yes, you need an unlocked bootloader

no, there's no guide on how to do that, as of now ALL Android Yoga 2 Pro tablets are having a locked bootloader (i heard tho that some guys are working on liberating the Yoga 2 Pro Android tablets from the evil locked bootloader, but imho they are just morons, more than a year since this Lenovo tablets have been launched and it's still locked and i guess it will remain this way)
[Thinkpad Tablet General] Voda_Smart_2:
Hi,

I try to root YT2 - 1050F ( Android 5.0.1 ) but when I try to install Super SU v 2.46 I get the error - signature verification failed.

I attach the pic with all the data.

Any idea what's wrong / how to solve ?

Thank you
[Thinkpad Tablet General] workdowg:
Corrupt file. Download again and try copying it to the tablet again. You can do it by using adb

adb push UpdateSuperSu2.40.zip /sdcard/

From my LG-G4, Rooted running Stock 5.1
[Thinkpad Tablet General] Voda_Smart_2:
zip file it is ok, triple checked.

I think the problem was ADB driver ( needed when tablet boot in recovery ) in w7 x64 not installed/recognized.... I succeed to install it in XP and when properly booted ADB sent correct file and cwm recovery started.... now it back-up.
[Thinkpad Tablet General] cageyone23:
Hi workdowg, was wondering if you have managed to sort out the above "How To" guide. Lolipop sucks and the ability to revert back to KitKat would be a life saver for me and by the sounds of it a great deal of others too.

Cheers
[Thinkpad Tablet General] workdowg:
Waiting for a reply from the master chef. This can be more dangerous than regular flash operations...
[Thinkpad Tablet General] workdowg:
OP updated

Updated OP with Return to KitKat from Lollipop:

Take care using if you flash the wrong files you

WILL HARD BRICK!!!
[Thinkpad Tablet General] :
one should not try this imo, what happens is that bios tries to start the bootloader from the ESP partition, but since it cannot find a valid filesystem (was not written due to the removal of the flash ESP command), it falls back, tho it shouldn't with zero (success) as return code and opens setup, however it's useless since the keyboard cannot be used (the protocol for loading the keyboard is present, but not activated, yes, it's on purpose, thanks again lenovo) , so one cannot but move up/down through the option (but not activate them as you would need an Enter key from an active keyboard, or a tablet with a Windows home function key)

however, at times it's possible that dnx protocol is not enabled (and i can give some situations when this happens), or when it cannot parse options in bios, and then you won't have any valid flash interface, and you will be in a situation similar with a hard brick (someone will have to dismantle the tablet to reprogram bios or write esp through internal port)

bottom line, useless experiment (and risky at times, if you want to stare at a bios setup screen, open it on your computer and remove keyboard should be similar)
[Thinkpad Tablet General] lupetz:
830L---->830LC

Hello,

first of all thanks for the guide..

i have a few questions about my 830L:

i've followed the guide to Make my Lenovo Tablet Yoga 2 830L able to handle voice calls. So now my tablet is a 830LC with the following firmware: Rooted_YT2-830LC_USR_S000095_1412191502_WW21_ROW

http://xdaforums.com/thinkpad-tablet/general/guide-make-lenovo-tablet-yoga-2-830l-t2950933/page1.

The ROM i have now is a 4.4.2 Kitkat and i'd like to Update to Lollypop..but when i try to update the sistem says that it's already at the last version. The region settings are DE (it was RU couse i've purchased it in russia).

So my question is: wich stock firmare should i use to keep my tab like 830LC? i can find only the firmware for 830L wich doesn't have a phone call features...

waiting for answer..

thanks alot..
[Thinkpad Tablet General] workdowg:
Sorry to hear your issue. I only have links to the firmware in post #8 (actually I'm downloading them now). This Chinese site has the firmware you're looking for but I have no way to access it... http://pan.baidu.com/wap/share/home?third=0&uk=2335146322&start=40
[Thinkpad Tablet General] Alpha1BA:
Well i've really F*cked it this time!!!! to cut a long story short all ive got left on my 2-830f is bios and dnx fastboot im all outta ideas a new picture frame perhaps??? if there is any chance that something could be done apart from the bin etc etc would appreciate hearing from you.

Cheers
[Thinkpad Tablet General] :
i wished that the biggest errors i have ever made would have been so easy to recover from (i mean for one who knows to read answers a little before asking questions)
[Thinkpad Tablet General] Alpha1BA:
well could one point one in the right direction?
[Thinkpad Tablet General] workdowg:
post #5 of this thread... You will need two files from the Lollipop OTA. You can try here - Your device is YT2-830F_USR_S100015_1505261558_WW52_CN_otafull.zip. I kept getting network errors but maybe you will have better luck. I'd like the file if you can get it. The other OTA's would be great too, 830L,1050L,1380F,1380L
[Thinkpad Tablet General] stanceski:
Hello workdowg, do you know how can I apply this otafull update?
[Thinkpad Tablet General] workdowg:
Hasn't worked out for anyone yet... I'm sure it could be flashed but your best bet is to take the OTA on unrooted KitKat.
[Thinkpad Tablet General] workdowg:
Wanted: Lollipop OTA's for - 830F,830L,830LC,1050L,1050LC

Those OTA's ended up being just the chinese KitKat firmware... Only one I've gotten was the one I captured.

Wanted: Lollipop OTA's for - 830F,830L,830LC,1050L,1050LC

If anyone goes back to stock KitKat to take the OTA, please copy it for me. Once it has downloaded don't reboot. Go to /sdcard/Lenovo_OTA (I think that was what it was called) and copy the OTA file to an external place (MicroSD, USB stick, PC).

Thank you.
[Thinkpad Tablet General] vlevi:
Is it possible to download Lollipo to the 1050L model?

OTA update does not work for me, because my tablet is a t-mobile branded model ?

Currently I have kitkat installed.
[Thinkpad Tablet General] workdowg:
Tough to answer... My guess would be to flash the generic 1050L KitKat firmware and take the Lenovo OTA update... Would your mobile data still work would be the question??? Maybe someone else knows that...
[Thinkpad Tablet General] vlevi:
Currently I don't have a sim card in my tablet, I only use with wifi. On my mobile phones, I changed firmwares many times, but those phones are vendor independent ones.
[Thinkpad Tablet General] vlevi:
The firmware update is OK, nowit is updating to lollipot, but I have a question.

" In Contacts click search and type "####6020#" and you will be prompted to select your region."

I cannot find hu (Hungary :( )

only de (Deutschland, Germany?), cz , uk, and many other regions.

I've chosen ma(and some chinese characters after it). Maybe it is?

I don't know. After the region select, the tablet rebooted, installed kitkat, after that Lollipop is installed succesfully.

It works now. I have no idea, if the mobile network is working, or not, because I don't have SIM card, only Wifi connection.
[Thinkpad Tablet General] CandyAndyM:
Step by step visual rooting video-guide? (Yoga 2)

Hi workdowg and

maybe others

!

First of all, thanks for the great contribution on xda-dev, when it comes to doing magic on the Yoga Tablet. After many hours searching the planet, without luck, for an easy one-click solution (like Framaroot) for rooting the Yoga 2, I came across your work in the xda-dev forum....

After years of jailbreaking on iOS ( sorry;) ) I finally got my hands on two new Yoga 1050F - like yours - (wifi only) now running Android Lollipop 5.0.1. As a total Android noob I have learned quite a lot reading on xda-dev, but still need a few answers before I dare to root the devices following the bit more challenging guide by social-design-concepts - knowing it´s on my own risk :)

1. Do you have a link to the adb / fastboot drivers for the 1050F - what ever that is :)

2. What would help me (and others) the most, is a poorly made youtube video rofly showing the hole procedure of rooting form A-Z this way. I think a simple visuel guide in conjunction with the fine tekst guide could help a lot of the bit more "technically challenged" Yoga users, so we dont´t need to understand the differences between CWM or TWRP or other technically terms, but just needs to follow step by step - you know, it helps seeing a picture of the meal before you start following the recipe! Have you (or you) come across such videos, or know someone in the xda community, that maybe would shoot a mobile-video?

(( Links in xda: http://xdaforums.com/showpost.php?p=57543871&postcount=1

http://xdaforums.com/thinkpad-tablet/general/how-to-one-guide-yoga-tablet-2-t3174597 ))

...but so far Android is great and it´s a fine tablet, but need the FolderMount app installed, which was my original reason to try rooting.

Thanks a lot - so that was why I took your time ;)

Take care.

Andy Mark

Copenhagen
[Thinkpad Tablet General] workdowg:
Just noticed this... Over 14,000 views and only 12 thanks in the first 9 posts....

Thanks.
[Thinkpad Tablet General] vlevi:
Sorry, I was too excited with my "new" tablet, when I finished with the lollipop update at 3am, I forgot thank your :)
[Thinkpad Tablet General] :
[MENTION=5173437]vlevi[/MENTION]

you are supposed to click the thumbup Thanks! button
[Thinkpad Tablet General] :
[MENTION=5173437]vlevi[/MENTION]

not at my post !!! érted? :)

oh boy...
[Thinkpad Tablet General] jumpup:
I was able to isolate this OTA:

YT2-830F_USR_S000143_1501051826_WW21_ROW_TO_YT2-830F_USR_S000195_1504220230_WW21_ROW

I let the System Update download but not install. Found under /sdcard/lenovoota

File: Media Card/YT2-830F_USR_S000143_1501051826_WW21_ROW_TO_YT2-830F_USR_S000195_1504220230_WW21_ROW.zip

MD5: 4d:de:c6:69:1b:40:23:ce:cd:f8:e2:b1:d6:54:0a:86

SHA1: 9e:11:b4:75:f7:5e:f8:96:ff:34:26:90:03:9a:b7:ab:50:6a:49:97

89.0 MB.

Is this the Lollipop OTA you seek? I've made a copy.
[Thinkpad Tablet General] vlevi:
Maybe is it a stagefright update?

https://support.lenovo.com/us/en/product_security/len_2015_085
[Thinkpad Tablet General] workdowg:
If you took it, there would be another going from T2-830F_USR_S000195 to T2-830F_USR_S100067 (which I have). I collected all the new updates. Thanks anyway.
[Thinkpad Tablet General] Goat1378:
Lenovo yoga 2 11

Hello all. I realize i may or may not be in the wrong place. So please be nice! Ive been searching all over (Yes even the search bar that very few can seem to find) and this thread is the closest ive come thus far. Iooking to root my Lenovo yoga 2 11 but.... I find the 8",10" and 13" but no 11" which probably means NO SUPPORT FOR ME! and im probably beating a dead horse but i figured id ask before i tap out. Would anyone know anything about this or point me in the right direction? Thanks for any possible suggestions that may come. Even if its give up! lol
[Thinkpad Tablet General] workdowg:
I'll be nice and say... That is not a tablet, it is an Intel based Windows laptop... I'm not really sure why you are asking here but... What is it you needed?
[Thinkpad Tablet General] Goat1378:
Lol! To not be so ignorant!!! :) All my searching got me around these parts! Being I knew it was a Windows laptop so why I was thinking it was still a tablet is beyond me. But because I'm not a fan of windows at all because of its vulnerability to pop ups and such I wanted to change to OS. I Didn't put 2 and 2 together until you say it. Duh!!! Its a laptop! I guess I was blinded by the search to see the obvious. LAPTOP! LOL Sorry.
[Thinkpad Tablet General] Einwod:
The 1050F file highlighted in red is not available. Any new location?
[Thinkpad Tablet General] :
they're all there, click on link, remove the trailing [ and refresh

also, a simple "YT2-1050F_S0198_150422_ROW" google search would result in the same link
[Thinkpad Tablet General] workdowg:
Thank guys... I was cutting and pasting and missed some stuff... All the links work again now.
[Thinkpad Tablet General] Einwod:
I'm really stuck. When I try to use the phone flash tool, the first part works but then the tablet boots back to the bios screen and the flash fails. I have tried the other methods also but cannot find a way to flash the firmware. What is the command?
[Thinkpad Tablet General] :
if you are on Lollipop and you want to flash a "clean" stock Lollipop rom then use this it's Lollipop ROM for 1050F: https://yadi.sk/d/CWBxhGqpjKXFD (the same steps, download, extract, remember to put sparsing/500MB in IPFT, flash with flash.xml)

if you are on Lollipop and you want to go back to a "clean" stock KitKat rom then it won't work just by flashing the stock KitKat rom, extra step is required (you will need to downgrade the BIOS first)

if you are on KitKat and you want to flash a "clean" stock KitKat rom the use the file downloaded in the previous post

(the 4-th case is if youre on KitKat and want Lollipop but i guess it's not your case)

should the above not be enough for you then post more details from the Intel Phone Flash Tool log window (in the bottom) so we can see what happened..

oh boy
[Thinkpad Tablet General] Einwod:
My problem is that I have no OS on the tablet. When I start it up, it goes to bios screen, nothing else. I'm trying to follow the instructions but the phone flash tool either reboots the tablet to bios and then everything fails, or as now this is the log:

# PhoneFlashTool - Logs generated on 2015-10-28T23:03:21

# Phone Flash Tool V 4.4.4-1 Win32 (build on Mon Apr 28 09:56:35 UTC 2014)

# OS: Windows 7 (x64)

10/28/15 22:57:04.495	DEBUG	Port 6/3: Start flashing IMG_FASTBOOT flash file for BaytrailC4354B08

10/28/15 22:57:04.518	DEBUG	IFWI flash started for device (Wed 28. Oct 22:57:04 2015)

10/28/15 22:57:04.518	INFO	Port 6/3: Rebooting BaytrailC4354B08 in Provisonning OS (current state = DNX_STATUS)

10/28/15 22:57:04.518	INFO	Port 6/3: Cannot Reboot android device, status is DNX_STATUS

10/28/15 22:58:11.709	DEBUG	Loading settings from C:/Users/Larry/.flasher/.phoneflashtool.opt

10/28/15 22:58:30.817	TRACE	USB on-plug scan enabled

10/28/15 22:58:30.829	DEBUG	Ethernet device ip set to 192.168.42.1-2

10/28/15 22:58:30.863	DEBUG	Loading settings from C:/Users/Larry/.flasher/.phoneflashtool.opt

10/28/15 23:01:35.017	DEBUG	Android device lost on port 6/3

10/28/15 23:01:35.017	DEBUG	Port 6/3: Android Device is disconnected

The tablet just switched itself off.
[Thinkpad Tablet General] :
and what was the last OS you had on the tablet? KitKat or Lollipop