yashsingh1/xdaforums huggingface dataset:
[Android Q&A, Help & Troubleshooting] Minto107:
You need to find someone who has 5.0.1 and LC model. The only thing you will need is just restore his backup in TWRP. Then after receiving next update from Lenovo(which may come next month or year XD) and it will change the model in bootloader too. But don't worry it doesn't matter at all ;)

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---------- Post added at 09:38 PM ---------- Previous post was at 09:36 PM ----------

You need Intel SDK drivers

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---------- Post added at 09:40 PM ---------- Previous post was at 09:38 PM ----------

And of course Lenovo drivers, then you need to change your device when it's in droidboot in Windows device manager your S8 to Android Bootloader device

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---------- Post added at 09:41 PM ---------- Previous post was at 09:40 PM ----------

It fails after rebooting to droidboot? Please post photo what happens on tablet when it stops flashing

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[Android Q&A, Help & Troubleshooting] umby75:
[emoji32]

I thought it was an easier work...[emoji27]

Aren't there full stock Roms available somewhere?

On Lenovo official website isn't there stock LC firmware?

I don't know users that have this tablet with LC firmware installed.[emoji27]

Anyway could we load an unofficial Rom to get the voice feature?

What is TWRP?

Sent from Note 4 device - Rome - Italy
[Android Q&A, Help & Troubleshooting] Minto107:
Lenovo doesn't provide full ROMs. Don't you know what is custom recovery?

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[Android Q&A, Help & Troubleshooting] umby75:
Custom recovery can load firmware from sd and something else when you boot the with combination keys when turn on the phone. Right?

Sent from Note 4 device - Rome - Italy
[Android Q&A, Help & Troubleshooting] Minto107:
So this is TWRP in some way. You will need Intel SDK drivers and Lenovo drivers and Temporary recovery session to get LC firmware. Isn't not that hard but this is something new to Samsung user ;) As I see you own Note 4? So it's not that easy like note 4.

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[Android Q&A, Help & Troubleshooting] umby75:
Yeah. It's a hard work..

Especially if you can't find the firmware and you need to create a rom backup by another tablet with LC version.

What do you suggest to get the voice feature on this tablet?

Sent from Note 4 device - Rome - Italy
[Android Q&A, Help & Troubleshooting] Minto107:
There is somewhere a backup of LC version lollipop. On some last pages it should be. I saw F L and I bet I saw LC model too eg [MENTION=5979766]Mac23[/MENTION]1

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[Android Q&A, Help & Troubleshooting] mac231us:
please check with others as I personally have not done this (not done flash LC on L...as already have LC version) saying especially since you already have Lollipop

whatever you do some imp things are

get latest flash tool

https://01.org/android-ia/downloads/intel-phone-flash-tool-lite

and follow steps in initial post of this thread by jazz (in terms of drivers etc...first thing you must do) (not talking about LC over L...that is something you need to ask others)

please ask others before you do anything further
[Android Q&A, Help & Troubleshooting] mac231us:
I have not got around to posting my LC (w/o data) TWRP LL backup yet..I will have it done tonight (as weekend so the laptop can sit idle running all night as process is slow for upload)..I will even put up the KK (latest version) (w/o data) TWRP backup
[Android Q&A, Help & Troubleshooting] emaxxim:
Just to be clear if I want to get rid of Lollipop and came back to KitKat on my Lenovo tab s8-50L:

- download the stock backup posted by [MENTION=2601301]J0s3f[/MENTION] here http://1drv.ms/1O3qTvg

- put tab on fastboot and restore the bakcup;

As simple as I write?
[Android Q&A, Help & Troubleshooting] TommyDN:
No the BIOS has changed too you need to follow the tutorial on the russian forum
[Android Q&A, Help & Troubleshooting] emaxxim:
Yeah in the backup there is the boot partition too. Just these(system and boot)? Even if I have the s8-50L I can restore the backup of s8-50LC?
[Android Q&A, Help & Troubleshooting] umby75:
Then, after your Lollipop LC sharing could be enough flash the firmware following all things (drivers and tools) to get the calls?

I needn't to mind the bootloader version, etc...?

Sent from Note 4 device - Rome - Italy
[Android Q&A, Help & Troubleshooting] TommyDN:
No the BIOS is totally different from the boot partition. BIOS is basicly like a computer BIOS you can't back that up and you need to downgrade that back to kitkats version too
[Android Q&A, Help & Troubleshooting] WildVenom:
Please update the original post

Hello..

Thanks everyone for the time and effort you are putting in to make this tablet better and for all the help. I have been reading through all the pages in this thread. It would be nice if someone can consolidate the findings and developments into a single post/a new thread.
[MENTION=4758472]jazzespresso[/MENTION] please update the original post (first post of this thread) with relevant information or links to other threads/post.

Information regarding:

Lollipop update files for F, L, LC models.

How to upgrade manually to Lollipop.

Method+Tools to root Lollipop.

Method+Tools for reverting back to Kitkat after upgrading to Lollipop.

Can someone post a link to the latest stable Lenovo System apps? ContactManager, Music Player, Calendar, Email, Camera etc. (maybe from their latest phones and/or from the Lollipop update). Do they work on KK?

Thanks..
[Android Q&A, Help & Troubleshooting] Minto107:
Jazz is not working with S8 anymore so OP is outdated... Thank XDA that they are too lazy to add one subforum for all INTEL BayTrail devices...

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[Android Q&A, Help & Troubleshooting] mac231us:
touchscreen issue and LL

strange as it might seem but i did not need to do the bios repair though i attempted to do on my prior 2-3 failed attempts to get back to KK from LL (later discovered that the problem may have been the old flash tools version...i updated to the latest and the flash worked of the KK after the bootloader unlock...never did the bios repair (now maybe the bios repair flash failed because of bootloader still being unlocked in my initial attempts but I know that even after unlock, the flash failed of the KK rom until I used the latest flash tools program...per the RU forum the bios repair appears to be optional? like to be done in the event of boot issues)

another topic it appears LL screen touch issues are related to SIM card being inside (active)? confirm?...something maybe about SIM Toolkit App?

https://forums.lenovo.com/t5/Lenovo...ab-s8-android-5-0-1-wifi-problem/td-p/2204372

https://forums.lenovo.com/t5/Lenovo...ating-to-Android-lollipop-Lenovo/td-p/2208157

https://forums.lenovo.com/t5/Lenovo...-and-sound-quality-after-upgrade/td-p/2208450
[Android Q&A, Help & Troubleshooting] Minto107:
About touchscreen. It may be. I have SIM card in my S8 but most time I use it in airplane mode because I have good WiFi signal, not to waste battery life... Also when you're in airplane mode you can't disable lockscreen, even if it's turned off. You need to disable Airplane mode then enter SIM pin and enable it again and bam you don't have lockscreen anymore(unless it's enabled in settings)

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[Android Q&A, Help & Troubleshooting] cinnamonagouti:
Experiences with downgrade

Hi,

you have succesfully downgraded to Kitkat. So my questions to you:

1) You´re sound is better now? Since I´ve updated to lollipop my sound is horrible.

2) Do you think that your touch screen reaction is better now?

By the way I´ll contact Lenovo in Germany on Monday asking what about downgrading from Lenovo itself for my tab is under guarantee and there are significant bugs in lollipop. So. let´s see what they will answer. I´ll post their answer here...

[MENTION=3105136]mac231us[/MENTION]: We´re hope waiting for your LC TRWP backup :o
[Android Q&A, Help & Troubleshooting] mac231us:
Will post it today and start upload in about a hour from now (may take several hours)..sorry about that

EDIT just started the upload 823am EST USA

See my responses above
[Android Q&A, Help & Troubleshooting] reinsen:
got it
[Android Q&A, Help & Troubleshooting] new-andy:
Afraid to update lollipop

Hi,

I want to update my s8 LC model tab to lollipop but afraid it might get issues as mentioned in earlier posts.

Is there any way to get complete backup and then upgrade so that I can downgrade easily if I face any issue in lollipop usage?

Thanks in advance !!
[Android Q&A, Help & Troubleshooting] mac231us:
Here is the no root no data TWRP backup of LC Lollipop

again not sure how this can be used to flash on another S8-50 LC but posting here per request (just my 'disclaimer' ....:)

edit use this link

https://onedrive.live.com/redir?resid=A224502451B20A5A!107&authkey=!AEofT2kklx21JTM&ithint=file,zip

2.31GB zip file...unzip to get the TWRP backup folder
[Android Q&A, Help & Troubleshooting] J0s3f:
The Backup I posted is a Stock Lollipop, not KitKat. So no!
[Android Q&A, Help & Troubleshooting] mac231us:
I can post a no data KK TWRP LC backup..will take several hours

might do that anyway just as well...update (much) later
[Android Q&A, Help & Troubleshooting] Minto107:
Sorry thats not that simple. You had to download downgrading tool and then flash your 4.4 backup

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[Android Q&A, Help & Troubleshooting] new-andy:
Are all users getting issue after upgrade in all models or its specific to some users or models of s8 ?
[Android Q&A, Help & Troubleshooting] cinnamonagouti:
What did you get? Windows on this tab? If yes, would you tell more about:confused::confused::confused:
[Android Q&A, Help & Troubleshooting] cinnamonagouti:
Flash L version with LC TRWP Backup - Lost IMEI!!!

First thank you very much for uploading, mac231us:good::good::good:

I made a restore of the backup from mac231us and want to tell about my experiences and give a serious warning for all L users!!!

I made the restore with all boxes checked (and maybe that was a mistake????)

After restore my tab booted but there were many problems: first the google keyboard didnt´t work and then many adjustments also didn´t work (menue was shut down). So the tab was unusable. But now the crazy thing:

The sound was right now an dolby worked!!! :p

But the worst problem: IMEI changed!!! So there was no connection to mobile provider!

Then I made the restore from the backup by [MENTION=2601301]J0s3f[/MENTION] here http://1drv.ms/1O3qTvg.

Everything worked but IMEI was still wrong!! After restoring my own TRWP backup the IMEI is correct again. :o

So if you will flash from L to LC don´t forget to make a complete TRWP backup from your tab on external sd-card!!!

If anyone can tell why restore doesn´t work, please let me know....
[Android Q&A, Help & Troubleshooting] cherremvp:
Thanks for the helpful post
[Android Q&A, Help & Troubleshooting] Minto107:
If you restore ESP you will have such problems

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[Android Q&A, Help & Troubleshooting] mac231us:
good thing you were able to go back to the old twrp....I am not familiar with the process (someone had posted it a while back flashing LC on L and getting voice calling...) how about EFS backup tool to backup and then restore your original EFS? (there is a free app for that in Play Store)

I think that is linked to the IMEI (think you would need root for that)
[Android Q&A, Help & Troubleshooting] Minto107:
It's not EFS, here it's ESP. EFS is known from Samsung phones and EFS backup is not same partition so it can't be backed up with using those tools

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[Android Q&A, Help & Troubleshooting] cinnamonagouti:
Aaah, okay. So which partitions should be restored and which not in TRWP Restore Menu?:confused:

Like Minto107 says, these apps are only for Samsung devices!!! But if you did a backup of your ESP with

TRWP, it shouldn´t be a problem...
[Android Q&A, Help & Troubleshooting] Minto107:
Restore system boot cache recovery dalvic cache/ART cache data(if it's in folder). But most important are boot and system, rest are recommended.

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[Android Q&A, Help & Troubleshooting] jazzespresso:
Provide detail info, links, etc....then send to me, so I can add them to OP post.
[Android Q&A, Help & Troubleshooting] mac231us:
yes you are correct..so skip EFS? (I see EFS.info EFS.vfat.win in the backup)...

have a Samsung device too..am not very knowledgeable and then further, all mixed up :)
[Android Q&A, Help & Troubleshooting] jazzespresso:
still around, I just don't have the device anymore...I was kind of sick of tired of waiting Lenovo to release darn Lollipop...

anything new info, firmware, etc needs to be added, please PM me....
[Android Q&A, Help & Troubleshooting] mac231us:
right away can think of this one

updated flash tool

https://01.org/android-ia/downloads/intel-phone-flash-tool-lite

thanks
[Android Q&A, Help & Troubleshooting] haerwu:
Can we create other threads for upgrades/downgrades, hacking, accessories etc?

I follow this thread since bought tablet. Since Lollipop got released for S80F thread became unusable as posts are mixed with each other in a way that I am considering unsubscribe from it as it is really hard to find something useful here.
[Android Q&A, Help & Troubleshooting] Minto107:
If you restore backup on your tablet(backup that was made on your tablet) you can restore it but do not restore someone other's EFS/ESP like you do on Samsung devices

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[Android Q&A, Help & Troubleshooting] nicche:
Hi everyone! sorry for my bad english!

I could buy this tablet ( because I'm looking for a cheep tablet) and I've read the issues about the DPI density... and even if I read correctely it can fix with mod the build.prop's but In the end it's a good tablet? lollipop works or it's better keep kitkat relase?
[Android Q&A, Help & Troubleshooting] mac231us:
yes if I knew ESP was similar/same as EFS, I would not have included it (anyway posted it with my 'disclaimer')...as I knew that the EFS is unique to each device

Will go into the online folder and see if I can delete those 2 (think i had skipped md5 cannot recall..otherwise need to do all over again)
[Android Q&A, Help & Troubleshooting] jazzespresso:
[MENTION=3105136]mac231us[/MENTION], [MENTION=7043620]Shump[/MENTION], [MENTION=6112002]balika011[/MENTION], and [MENTION=5387684]Minto107[/MENTION]

OP post has been updated. If you want me to add more info, details, download link, instruction, etc.., please PM me or post here so I can update OP post.

Cheers,

Jazz
[Android Q&A, Help & Troubleshooting] Minto107:
Thank you mate! As soon as I'll find sometime I'll write you PM about what should be added to OP with links, all stuff etc ;)

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---------- Post added at 06:58 PM ---------- Previous post was at 06:56 PM ----------

You can change DPI without any problems. Also it's very good tablet. Decent battery life, good screen quality and resolution. Performance is very good. It works much faster than Samsung TAB S(mainly because we run stock android and TAB S runs crappy TouchWiz) I would recommend to keep it on KitKat unless you want windows 10 or custom ROMs(not available yet)

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[Android Q&A, Help & Troubleshooting] mac231us:
installed xposed (on KK)

been running gravity KK, dual clock status, xblast, xuimod, xutilities

http://repo.xposed.info/module/de.robv.android.xposed.installer
[Android Q&A, Help & Troubleshooting] electron.hTcpico:
ok i see the updated op but just two questions.

does the F version twrp lollipop backup works with LC version ?

and what are the drawbacks/bugs?

and please explain the added links what does the new unlock tool do exactly.

Thanks
[Android Q&A, Help & Troubleshooting] TheBigby:
Stuck in shell after unlock

After trying to unlock the S8 using the S8 Unlocker tool posted from [MENTION=888909]bail[/MENTION]ka011 my device is now stuck booting to an EFI screen that gives the message "Press Esc in 5 seconds to skip startup.nsh, any other key to continue" then goes to a Shell> command and stays there. Tried forcing it into recovery but did not respond. Keeps going there. Tried adb and does not recognize the device, nor does the Flash Tool. Is the device now bricked and unrecoverable?
[Android Q&A, Help & Troubleshooting] cristi.badoi:
Hello guys,

it seems I entered the obscured world of the S8-50L tablet. I am happy with it, but I am missing the multi-user support that Lenovo thought it is not needed and removed it from Lollipop.

I found the post which explains on how to get multi-user support, and the root method posted by [MENTION=4821597]social-design-concepts[/MENTION], but it seems I am doing something wrong.

I installed the device drivers from the tablet(connected to PC using the CD option and installed them),

the device is recognized as Lenovo adb composite device, but when I enter recovery I seem to get the stock one and not CWM or TWRP.

Is root not possible on Lollipop or am I doing something wrong?

If root is not possible on Lollipop, I saw there is a way to get back to KK? Will all functionality be kept, or are there some downsides to it?

Thank you!
[Android Q&A, Help & Troubleshooting] Minto107:
There is nothing easier than having root ;) you need SuperSU zip and flash it in TWRP. To access TWRP you need to have Intel SDK drivers and also Lenovo drivers. Then you need to follow temporary CWM session and when it boots into droidboot change your device to be recognised as Android Bootloader device in Windows Device Manager ;)

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---------- Post added at 03:59 PM ---------- Previous post was at 03:55 PM ----------

You can flash F backup on your LC but you will loose LTE compatibility unless you again install L/LC firmware/backup

Please post a video of full boot sequence with focusing on text that appears on screen. Also has unlocker passed successfully? If not what was the error message? Are you sure you had every driver installed?

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[Android Q&A, Help & Troubleshooting] Shump:
What device are you using? (S8-50F, S8-50L, or S8-50LC)

What version were you on when you ran the tool?

I do not think the tool will work for Kitkat.

Is your device recognized by a PC? (under device manager is there any ADB/fastboot devices, Android phone/device, or unknown devices)

Are you able to boot to the bootmenu? (Hold power button + volume down for about 8 seconds)
[Android Q&A, Help & Troubleshooting] cristi.badoi:
Hello [MENTION=5387684]Minto107[/MENTION],

I managed to install the zip file(root) - by changing the device in device manager when it was rebooted.

I installed the SuperSu application from Play Store, and everything is working, so far.

Now when I try to change the build.prop file from adb as found in this thread it won't let me:

C:\>adb shell
~ $ echo "fw.max_users=3" >> /system/build.prop
echo "fw.max_users=3" >> /system/build.prop
/sbin/sh: can't create /system/build.prop: Permission denied

I also tried with an editor from the Play Store, only to get the same results - can't change it

Any ideas?

LE: I installed the driver file which came on the tablet and the intel flash tool lite(i thought that it might contain some driver files).

Is there something more that needs to be installed?
[Android Q&A, Help & Troubleshooting] Minto107:
Have you tried editing it manually? Install ES File Explorer and gain it root then go to /system and edit build.prop manually ;)

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[Android Q&A, Help & Troubleshooting] TheBigby:
Device is no longer recognized by the PC. The adb drivers were installed and would recognize when the device was plugged in previously.

Using an S8-50F model of the Lenovo. Was on the 4.4.2 version of KitKat at the time.

Cannot force it to boot into the recovery mode, just goes straight to the EFI loader screen with that message on it after a few seconds and hangs there.
[Android Q&A, Help & Troubleshooting] Minto107:
You probably messed it totally... Unlocker works only on Lollipop bootloaders 64bit. Try to use downgrading tool to install 4.4.2 bootloader, it can work, try various combinations to recognise it on your PC. If it can't get recognised, I don't think you can do much about it

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[Android Q&A, Help & Troubleshooting] TheBigby:
I am not familiar with the downgrading tool, is that something located in the original thread or somewhere else? Possibly the flash tool?
[Android Q&A, Help & Troubleshooting] cristi.badoi:
I tried, ES File explorer, total commander and Build Prop Editor. All were granted SU rights.

After I reboot the change is gone. :(

LE: It worked in the end with total commander after multiple tries :D . Thanks [MENTION=5387684]Minto107[/MENTION] for your help.

LE LE: It worked to add an user, but I can't see it and don't have the change user icon :(

LE LE LE: ok, the users are added, but to switch to one you need to press the empty space next to the battery when the screen is locked
[Android Q&A, Help & Troubleshooting] Minto107:
Did you set it like that?

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[Android Q&A, Help & Troubleshooting] Kaelaqua:
I have the lc version. Any idea on root? Lollipop 5.0.1

I was using the kitkat root tat was posed here. Worked fine till the lollipop update. I hate that they removed the multi user. It as really use full for me. My chrome kind of got downgrade in experience after the update, too buggy while playing videos. Kitkat was perfect. And also could someone explain or guide me to a thread for downgrading to kit kat in case there's no root for lolipop