yashsingh1/xdaforums huggingface dataset:
[Android Q&A, Help & Troubleshooting] cristi.badoi:
Lollipop step by step guides for root and multiuser

Install root on lollipop(Windows)

1. Install the drivers from the tablet: connect it to the PC and set it as CD.

2. Download the files from this thread(IntelAndroid-FBRL-07-24-2015.7z and UPDATE-SuperSU-vX.Xx.zip): Temp CWM Session by [MENTION=4821597]social-design-concepts[/MENTION]

3. Unpack the IntelAndroid 7z archive(google for 7Zip utility if you don't know about it or don't have it)

4. Put the UPDATE-SuperSU-vX.Xx.zip on your tablet(I used PTP)

5. Enable USB debugging(google for it as there are tons of "how to")

6. Connect tablet to PC with USB debugging and MTP/PTP option

7. Run launcher.bat from the IntelAndroid(from the folder you just unpacked at step 3)

8. Follow the instructions in cmd window(enter "ACCEPT", selected preffered recovery, use option T4)

9. When the device is rebooted to fastboot, go to device managers and update the driver for the android device(some guides for the options: browse my computer for driver software, let me pick from a list of devices, select android, select Lenovo ADB composite). If all done well at this step the script executed at step 7 should continue and device should be booted to the temp recovery

10. install the UPDATE-SuperSU-vX.Xx.zip

11. reboot and install SuperSU applciation from the market

12. done! Now you are rooted

Enable multiuser support:

1. Root must be in place

2. add the following lines to the build.prop file located in /system

fw.max_users defines the number of users that the device can have(I don't know the upper limit)

fw.max_users=3
fw.show_multiuserui=1

How to edit the file?

see this post

I did something wrong so it didn't work for me. Instead I used Total Commander application downloaded from Play Store.

1. Browse to /system

2. Click on the build.prop - select option to edit with Total Commander editor

3. Add the lines from above

4. Save - here you will be prompted to grant SU rights, and to remount the /system as read-write. Read the messages and agree :D

If all goes well the file should be saved and now you just need to restart the tablet(not sure if restart is really needed)

5. Use adb shell commands to add/remove users():

adb shell pm create-user "user name"

6. To switch users, just lock the tablet and next to the battery, on the right, there is an empty space. Click on it and you should see the users(the new ones and the guest user)

Disclaimer: I have not created any of the methods and tools/applications used/mentioned here.

This information is most likelly found here on xda under another form or spread through posts.

Thanks to:

[MENTION=4821597]social-design-concepts[/MENTION] for the method to root our tablet

[MENTION=4855006]37vincent[/MENTION] who posted the multiuser method to this thread

[MENTION=5387684]Minto107[/MENTION] who bared with me and my stupid question on how to
[Android Q&A, Help & Troubleshooting] KainXSS:
if after running the downgrader from the other site and get stuck in EFI shell or bios, keep trying to get fastboot mode to work(power+vol up+vol down) then flash stock firmware. If Fastboot mode does not work try discharging the tablet then try to get it to detect the tablet afterwards(disconnect battery and then hold power button while disconnected for a minute or two.
[Android Q&A, Help & Troubleshooting] mac231us:
I came back from the EFI error (bad flash interrupted)...please have a look here and see if it helps (put this up for one our other members here) (see how I got to the fastboot starting..maybe nothing new here or useful but sharing what 'worked' for me)

https://onedrive.live.com/redir?resid=A224502451B20A5A!126&authkey=!AC6F6QzN6QIj_lY&ithint=file,docx

and various links for the softwares/files

change region code translated

https://onedrive.live.com/redir?resid=A224502451B20A5A!118&authkey=!AHuCw1S_DdI2-qo&ithint=file,docx

rollback process translated

https://onedrive.live.com/redir?resid=A224502451B20A5A!116&authkey=!AAG5dTolm0gIR-Q&ithint=file,docx

my rollback 'process' (what worked for me)

https://onedrive.live.com/redir?resid=A224502451B20A5A!126&authkey=!AC6F6QzN6QIj_lY&ithint=file,docx

s8 unlocker

https://onedrive.live.com/redir?resid=A224502451B20A5A!113&authkey=!ANeDigta35KPHyw&ithint=file,zip

repair bios (not sure if necessary..I did not do it..though attempted few times which on one instance failed

but because of old flash tool..and ran me into that efi boot issue)

https://onedrive.live.com/redir?resid=A224502451B20A5A!112&authkey=!AByol9S-FMTgor4&ithint=file,rar

s8 otkat (for the pft xml file)

https://onedrive.live.com/redir?resid=A224502451B20A5A!108&authkey=!AJt3i7xMGpeuhTs&ithint=file,rar

latest phone flash tool (by 'stitched' in ru forums I understood that (later) to be 'updated')

https://onedrive.live.com/redir?resid=A224502451B20A5A!117&authkey=!AJcS2SJJm2YlaDs&ithint=file,exe

minimal adb and fastboot

https://onedrive.live.com/redir?resid=A224502451B20A5A!109&authkey=!AJ43H8nkEOG45UU&ithint=file,exe

adb

https://onedrive.live.com/redir?resid=A224502451B20A5A!111&authkey=!ABLyvkMw5k1jDs4&ithint=file,zip

android sdk

https://onedrive.live.com/redir?resid=A224502451B20A5A!114&authkey=!ABkZkSW2Pks8G4Y&ithint=file,zip
[Android Q&A, Help & Troubleshooting] mac231us:
what worked for me on LL (yes the abhored LL) for xposed

what worked for me on LL (yes the abhored LL) for xposed

was curious to see if I could do the LL to KK rollback again (but also wanting to give LL another try about the typing issues I had which was my biggest complaint about LL versus KK)

so I did the OTA update but did not do any factory reset (think I will do a factory reset soon but just wanted to see again how this LL would work)

somehow it seems to be working much much better (also did root by temp TWRP recovery and flashing su zip) and then removed the SIM toolkit (not sure if this really does anything)...it was and is working much better regardless of the SIm toolkit apk removal

anyway I also managed to get xposed running (gravity, dual clock status bar etc..not all modules that run in KK run on LL though)

now what I cannot recall is if I did (1) first and then (2) or the other way but do not think it matters since not opening the installer until the zip has been flashed anyway

1) installed the xposed alpha installer (but did not run or open it)

2) then went to temp twrp recovery and flashed the zip file (sdk21 v78 for x86)

rebooted

3) then opened the installer and downloaded modules/loaded the ones I already had

original files are from here

http://xdaforums.com/showthread.php?t=3034811
[Android Q&A, Help & Troubleshooting] Kaelaqua:
rooted successfully

thanks bro rooted the tab . i edited the build .prop i am able to switch user but have to go to settings everytime .the one at the lockscreen is not shown. anyway thanks again something is better than nothing . :)
[Android Q&A, Help & Troubleshooting] cristi.badoi:
On the lockscreen there is no icon, just an empty space besides the battery. That one should work.

LE: I'll post a screenshot when I get home.
[Android Q&A, Help & Troubleshooting] TommyDN:
Can confirm this works on s8-50F lollipop now too. I think the recent update from xposed fixed it for us.
[Android Q&A, Help & Troubleshooting] Minto107:
But why to use Xposed? Its always a reason of bugs or lags because it's 'universal' I would suggest everyone not to use Xposed

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[Android Q&A, Help & Troubleshooting] cristi.badoi:
Has anyone tried making a custom rom for this?

Flash should work through recovery, right?
[Android Q&A, Help & Troubleshooting] TommyDN:
Customization, per app DPI, adblocking, background YouTube player, root cloak, lollipop memory leak fix and removal of google stufff makes xposed more than welcome to me.
[Android Q&A, Help & Troubleshooting] Minto107:
Memory leak? I reboot tablet everyday(actually I turn it off for night and turn it back on after getting up) and it works perfectly. Background YT? I don't think it's useful, adblocking? Adblock app, do you need per app DPI? It works fine on 240DPI after fixing build.prop. Customization? Buy Samsung TAB series. There's completely no need to use this crap

Wysłane z mojego Lenovo TAB S8-50L przy użyciu Tapatalka

---------- Post added at 08:03 PM ---------- Previous post was at 08:02 PM ----------

;)

Wysłane z mojego Lenovo TAB S8-50L przy użyciu Tapatalka
[Android Q&A, Help & Troubleshooting] geogaddi47:
Xposed v78 x86 works without bootlooping?
[Android Q&A, Help & Troubleshooting] TommyDN:
yes works fine now.

---------- Post added at 08:46 PM ---------- Previous post was at 08:32 PM ----------

- I don't reboot my tablet daily so i need either lollipop 5.1 that fixes the memory leak or the xposed module that fixes it.

- I play some of my music on YouTube so it's nice to have background play.

- Adblock apps don't always work and take up system recources.

- 240 dpi is mostly better but some apps ae too small so i need it bigger.

- why would i buy crappy Samsung when i can customize this one fine?

not trying to start any fights but your argument makes no sense.
[Android Q&A, Help & Troubleshooting] Shump:
awesome find with the multiuser support. I tried getting this to work right after lollipop and gave up after it appeared I could not switch to any other accounts besides guest. I didn't try to click the blank space lol.

I'm going to try and figure out why the proper icon doesn't display. My guess is we are missing an image file somewhere. I'll see if I can figure out what is causing the icon to not display properly.
[Android Q&A, Help & Troubleshooting] banmeifyouwant:
Look at this:

Yeah! I can't post links... -.-"

i . imgur.com / Q8lRmeq.png

How beautiful it is!

Tab S8 running a custom kernel. :angel:

Known bugs:

- No sound

- Wifi not works

- Camera not works

- Accel y is fliped
[Android Q&A, Help & Troubleshooting] cristi.badoi:
well, there is a guy on github with a kernel for S8-50, but I don't think he has a thread on xda:

https://github.com/balika011/android_kernel_lenovo_spark

He seems to do quite some progress :D

But I think it's gone take some time since the kernel is probably based on 32bit kitkat(lenovo sources) and this is build for 64 lollipop(from what I saw in the files)

[MENTION=7062343]banmeifyouwant[/MENTION]: is that you, balika011? :D
[Android Q&A, Help & Troubleshooting] Minto107:
Looks very promising ;) after making custom kernel there's place for building CM ;)

Facepalm it's him???

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[Android Q&A, Help & Troubleshooting] social-design-concepts:
man i got to catch up on some reading in this thread.
[Android Q&A, Help & Troubleshooting] dzidexx:
S8-50, lolipop, the video in skype not working!

Hi, I have a little problem.

I can not make a video call. The tablet (s8-50F) does not send video to the caller. I tried different versions of Skype (raider, rover, 5.4 and up to newest). On KitKat skype was working good.

Does anyone have an idea how to fix it?:confused:
[Android Q&A, Help & Troubleshooting] Minto107:
Good to see you again ;) how are you?

Wysłane z mojego Lenovo TAB S8-50L przy użyciu Tapatalka
[Android Q&A, Help & Troubleshooting] Kaelaqua:
multi user

i found a module (multi user )in xposed that allows changing the user using power button . its working fine for me . and is there any proper custom rom for s8 ?
[Android Q&A, Help & Troubleshooting] Minto107:
So far no custom ROMs

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[Android Q&A, Help & Troubleshooting] nachiket_xda:
Not asking for ETA but is anybody working on CM13 here?
[Android Q&A, Help & Troubleshooting] Minto107:
So far no-one

Wysłane z mojego Lenovo TAB S8-50L przy użyciu Tapatalka
[Android Q&A, Help & Troubleshooting] TommyDN:
When the custom kernel is 100% working there will be rom development.
[Android Q&A, Help & Troubleshooting] umby75:
I'd like to flash the LC Lollipop version to get the calls since you shared your LC backup.

You wrote that the backup includes the Esp folder (similar Efs folder in Samsung) and you wanted remove that folder.

Then I don't know if I need to remove by myself..to avoid issues about Imei on tablet..

I'd want ensure the steps that I need to follow:

- install all drivers (Intel sdk and Lenovo drivers for Windows);

- how to enable the twrp session to flash the new firmware?

- decompress the file you shared and copy all things except Eps folder in (external or internal?) sd card;

- enter in twrp mode with key combination (Power key + Vol up simultaneously when you want turn on the phone);

- flash after selection the file;

Right?[emoji57]

Sent from Note 4 device - Rome - Italy
[Android Q&A, Help & Troubleshooting] Minto107:
Dammit. It's easiest thing in world, restoring backup but alright I'll write how to do it one more time :D

After downloading Mac's backup place it in your tablet's TWRP folder then in recovery hit restore then Mac's backup and choose those partitions(if one or two of them are not available it's alright just skip them):

-system

-data

-cache

-dalvik

-boot

This is all you need to know. Most important are boot and system rest are recommended. You should pass it fine ;)

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---------- Post added at 12:14 AM ---------- Previous post was at 12:10 AM ----------

Oh sorry I forgot about entering TWRP. Follow SDC's temp recovery session instructions, necessary drivers are Intel SDK and Lenovo S8 from your tablet after connecting to PC.

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[Android Q&A, Help & Troubleshooting] umby75:
It's easiest thing for an expert user..[emoji27]

Thanks for fast reply.

I installed drivers and flash tool software.

I tried to boot in Fastboot the tablet and the tool on pc gave me Connected and then Adb and Fastboot OK[emoji106]

But i didn't understand how can I install and then start the twrp session.

I followed this guide:

http://xdaforums.com/showthread.php?t=2975096

but at point three the guide explains about triggers...and i don't know what are they?

At point 4 the guide explains that in Fastboot.."and begin to copy files to your device".

Where? How?

I downloaded the SuperSu.zip file too for root that is linked in that guide and I think that is the wrong one..

I have lost some step...

Anyway now i have Lc file shared by Mac231us on internal sd and about Esp and Imei needn't I to worry?

Sent from Note 4 device - Rome - Italy
[Android Q&A, Help & Troubleshooting] lochuynh.it:
Thanks u so much.
[Android Q&A, Help & Troubleshooting] dzidexx:
Re

[MENTION=4536268]umby75[/MENTION]

Don't restore ESP!!! You will loose imei!!!

Tab: debuging usb ON, connect to pc.

1. Launcher.bat; ACCEPT; T4, 3 or 4(twrp).

2. At phone in twrp - do full your own backup (system tick only once). Reboot tab.

Fix su? - No

3. Copy folder TWRP/Backup to the pc. Delete all in foleder 2015... To an empty folder copy unpacked mac's backup. System, boot etc.

4. Launcher.bat; same steps; restore - tick only system and boot. Reboot, fix su - No.

Check LC, check supersu, maybe it is. In the same way you can flash supersu.

Sent from Note 4 device - Rome - Italy[/QUOTE]
[Android Q&A, Help & Troubleshooting] umby75:
Ok for Imei and Esp...

But launcher.bat where do i find?

Where is this folder?

Sent from Note 4 device - Rome - Italy
[Android Q&A, Help & Troubleshooting] dzidexx:
Re

1. Launcher.bat is in link you posted #1328 (previous page)

2. Folder you will see after you do the backup.
[Android Q&A, Help & Troubleshooting] umby75:
I have deleted the content into backup folder created in phone and I have copied the content of folder Mac231us' decompressed in an empty folder into phone i called New Folder.

But when I start Twrp session and i want restore I think that the system finds no right thing...please see the attachment

And restoring is failure..

Sent from Note 4 device - Rome - Italy
[Android Q&A, Help & Troubleshooting] Minto107:
So you have drivers installed it's good because most users fails here. Then use trigger T4, it works on all S8-50 perfectly ;) then SuperSU zip will be called UPDATE-SuperSUv2.46 or something like that and about restoring, restore only those partitions that I mentioned in last post and you'll be fine. If you're worried about your IMEI just backup it in case if something goes wrong

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[Android Q&A, Help & Troubleshooting] dzidexx:
Re

You have to copy files from mac's backup to the folder which was created by twrp!!!

Into empty place where were files from yours backup.

Sdcard0/twrp/backups/baytrail***/2015***/Here!!!

Not in "new folder"

Have you yours backup in safe place? If no - create backup and do it!!

File Mac dal backup è necessario copiare lo spazio vuoto per conto proprio. Non "nuova cartella". Backup personalizzato in un luogo sicuro !!!
[Android Q&A, Help & Troubleshooting] umby75:
Ok. Now it works and i have got the calls! [emoji106] [emoji6]

I didn't know that the system wasn't restored to factory settings but it kept all softwares and settings! Great!

It's completely different by Samsung about these things...

[MENTION=5387684]Minto107[/MENTION]

I downloaded the SuperSu.zip file but i didn't flash it before of flash the rom.

Anyway I will able to root the tablet in the future to waste bloatware and get some other features..but my main concern were the calls.

I don't how it works for warranty in Lenovo devices modified w/o root and rom changed.

Sent from Note 4 device - Rome - Italy
[Android Q&A, Help & Troubleshooting] dzidexx:
Re

This is the reason why you need to keep own backup. You can restore it in twrp and tab will be at state like at 01:30 PM today.

Ps

Twrp works in this way on all tablets and smatphones (also samsung). For s8 and another intel based tablets, twrp/cwm/custom recovery is not flashable, only temporary.
[Android Q&A, Help & Troubleshooting] Minto107:
After Lenovo will update S8-50X in the future your UEFI probably will get updated too. But now I know why you all want call feature. Tomorrow I want to bring my tablet instead of my phone but it's a problem now. Till 17 November I had SIM card in my S8 but now it's unuseful because my SIM is not longer working, so I thought to swap card from my phone but without calling feature it's completely unuseful :(

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[Android Q&A, Help & Troubleshooting] banmeifyouwant:
Does anyone wants a twrp?

balika011.me/dl/s8twrp.img
[Android Q&A, Help & Troubleshooting] dzidexx:
Qestion

Where did you get this twrp?
[Android Q&A, Help & Troubleshooting] philmein:
Can confirm twrp working if some what slow its permanent twrp working with s8_50f

made a backup of my existing rom on my sd card.
[Android Q&A, Help & Troubleshooting] TheBigby:
Your information on who to force tablet into fastboot helped me to make it identifiable in the flash tool and reflash it. It worked well. Thank you.

---------- Post added at 06:05 PM ---------- Previous post was at 05:59 PM ----------

Recently had a cracked screen and decided to try and repair it by buying a damaged S8 with a good working screen and digitizer. When I got it there was a problem with its mobo, it was stuck in the boot screen forever and nothing I tried could fix it, so I went ahead and dismantled it and put the mobo from the S8 that had a cracked screen but was working fine beyond that into the tablet with the defective firmware. It worked well but the screen is very dim. When you boot into the OS of the tablet it pops up with a message saying throttling screen brightness due to thermal event right away. It stays at that level but can go dimmer still but no brighter. Tried reflashing it but makes no difference. I took it apart again to make sure there was no problem with the thermal shields or the pads, all looked fine. Still getting the same problem. Not sure if its just an issue with a sensor on the mobo misreading something or what. I put the old mobo back in just to test it and the backlight doesnt even come on on that one, you can see the Lenovo logo there still just no backlight on the screen at all. Putting the other mobo back and we still get the dimness issue. I've scoured online for a possible answer but so far nothing tangible has helped. I nearly bricked it trying to unlock and root it to see if that might help somehow. Any insight would be helpful. This is the S8-50F. Currently running stock KitKat rom at 4.4.2
[Android Q&A, Help & Troubleshooting] gigiduru:
For those of you who did a factory reset, how long did it take ? Mine is stuck on the screen with the android figure and the text "Erasing..." for the last 3 hours :|
[Android Q&A, Help & Troubleshooting] dzidexx:
Thermal throttle

After root, you can try edit file "thermal_throttle_config.xml" in system/etc. Originally is set 100, 40, 40; you can change to 40, 40, 40 or 100, 100, 100 f.e. or change thermal warning & alert from 3 to 4.

I haven't any problems in thermal, so I didn't try it.
[Android Q&A, Help & Troubleshooting] gigiduru:
tried this, it goes back to the same screen :(
[Android Q&A, Help & Troubleshooting] dzidexx:
Factory reset

Use temporary(tethered, link below) twrp/cwm recovery or stock recovery - do "wipe data/factory reset". Don't use " wipe/format system".

http://xdaforums.com/android/development/intel-android-devices-root-temp-cwm-t2975096
[Android Q&A, Help & Troubleshooting] Lander00:
Although I know russian language a little, I was waiting for instructions in english.

Finally came back to KK. Muuuuuchhh better. No more lollipop. On this tablet it's a bull****.
[Android Q&A, Help & Troubleshooting] Minto107:
At first I had same opinion as you ;) but now I found dead lollipop good enough to just keep it ;) I was a bit tired of stock KitKat look which was boring and new design is very good ;) also I feel like it's even smoother in some tasks and also that performance in games... I haven't felt such smoothness even on my Note 4. Can't wait to install GTA SA on it. If was great to play on Galaxy S3 and Note4 but I think that larger screen=better gaming :D

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[Android Q&A, Help & Troubleshooting] Spitras:
Glad it helped. I've also came back to KK, LP is unusable right now, tried rooting it, removing some bloatware but still it is buggy and laggy (at least for me)

The irony is: we all were so desperately waiting for LP, and now coming back to KK :D
[Android Q&A, Help & Troubleshooting] Kaelaqua:
Even I like the look of LP but the bugs are irritating at times. Anyone having an issue with the power button? Like it does not respond at times when trying to turn the screen on. Which so many bugs I am not sure if is a bug or hardware problem
[Android Q&A, Help & Troubleshooting] gigiduru:
After a couple of resets followed by the same screen I kinda gave up on it and left it on my desk for the battery to die, when suddenly the darn thing reboots itself and goes back to normal. :confused:
[Android Q&A, Help & Troubleshooting] Micalus:
Since we now have an unlocker and a working permanent recovery, could someone with the skill for it port cm12.1 or a cm based rom like blisspop, aicp or exodus for our devices? i would be damn pretty happy to see even the stock cm12.1 for the tablet.

After so many ppl complaining about the stock lollipop rom (which is running smooth 2 hours of SoT and a week of standby) and missing multiuser, i would really love to see cyanogenmod on this tablet.

cheers

Mike
[Android Q&A, Help & Troubleshooting] dzidexx:
Re

If you have custom recovery(cwm, twrp, philz?) and root, you can chenge it yourself.

Dpi - edit build.prop

Multiuser (switch me - google play) or:

http://xdaforums.com/general/general/lenovo-tab-s8-50f-stock-firmware-rom-t2989791/page131 (twrp - you can use terminal in twrp)

Battery - LP nothing chenged for me.
[Android Q&A, Help & Troubleshooting] Micalus:
I think you misunderstood me here. I want a custom rom on a cm base. How i can change my DPI or to switch between users, i know how to do that.

But it would be great if we had 5.1.1. for the s8-50 on cm based with integrated multiuser.

cheers

Mike