yashsingh1/xdaforums huggingface dataset:
[Android Q&A, Help & Troubleshooting] haerwu:
For me upgrade went fine without issues.

No idea about brightness flickering as never saw it under kitkat.

I use tablet at home only so do not bother about battery life.

Still fast enough for my use.

Two issues: multiuser support needs to be enabled and Xposed does not work.

Can be rooted safely.
[Android Q&A, Help & Troubleshooting] mustyrash:
OTA is safe, I restored the screen DPI, reverted whatever build.prop changes I made, unfroze any apps in titanium backup and removed root before installing the OTA. Everything went fine

I've noticed the brightness thing a few times but its not been as frequent or extreme

Standby battery life is great. overnight with aeroplane mode on, WiFi etc off, brightness minimum on KK I'd lose about 10%-20% on L I lose 1% or 2%

While using the tablet the battery life isn't as bad but with root I think I can make it better

The OS as a whole feels faster, normally I'd get stutters and lag when opening quick settings but here it's very smooth. WiFi seems to be a bit better.

Benefits over kitkat? Battery, native 64bit support, feels faster

Problems? People are having problems with Dolby audio but I don't use that. I can't activate battery saver mode for some reason, I think they've set it to only work under a certain percentage where on stock Android you can turn it one at 100%. Lenovo have a lot more bloat apps or I'm seeing them for the first time as I use to freeze them in titanium

I believe root works but I've not rooted yet as I don't really need it and it would be a quick process for me to update any ota lenovo push out.
[Android Q&A, Help & Troubleshooting] TommyDN:
This works for me but you have to format all the partitions with 'fastboot format system/cache/config/data' instead of 'fastboot erase system/cache/config/data'

This makes the partitions mountable in TWRP.

AFAIK the format option of fastboot only works on linux systems? (I'm not completely sure of this though)
[Android Q&A, Help & Troubleshooting] khanghua:
I'm sitting here waiting for the f***ing update... (S8-50LC)
[Android Q&A, Help & Troubleshooting] mackhenri:
Relax dude the LC update is from 5th.. The L version yet has not seen the update so the LC update will be delayed more I guess

Cheers to Lenovo
[Android Q&A, Help & Troubleshooting] smogan:
FINALLY!!!! :D :D !!! :D :D !!! BACK TO LIFE...

First things first: Thankyou scial-design-concepts and of course all other people who tried to help me!!!

I restored your Backup using TWRP. After reboot the tablet it did another auto reboot and the Android Guy with the rotating thingy showed up... and a progressbar... took maybe 5 minutes. Another auto reboot and lenovo logo and boot sound... and another progressbar. another 5 to 10 minutes passed by. finally android language choice showed up.

meanwhile i rebooted the tablet a couple of times and everything seems to work!!!!

in TWRP all partitions are mountable again. in strock recovery the error message about cache partition is gone, too.

I am very thankfull to you all.

one thing is a litte... weird, but maybe not, because I never paid attention: at the bootloader screen, where andy lies on his back, the hatch opened following text shows up:

FASTBOOT MODE
PRODUCT_NAME - S8-50F
VARIANT - Lenovo TA
HW_VERSION -
BOOTLOADER VERSION - unknown
IFWI VERSION - SPARK_81.X64.0003.R1.1506171339 FFD8_X64_R_
SERIAL NUMBER - Baytrail0E064B4A
SIGNING - ?
SECURE_BOOT - ?

E:No valid installer medium found

and after a while: Could not open /sys/devices/virtual/backlight

I tried to flash the lollipop upgrade again with stock recovery, because for sure. but it stops with an error message.
[Android Q&A, Help & Troubleshooting] TommyDN:
This always happened for me even on the kitkat rom so i don't think there's any worries.
[Android Q&A, Help & Troubleshooting] Minto107:
I asked XDA admins about making a subforum for S8-50 but no success ;)

Wysłane z mojego GT-I9305 przy użyciu Tapatalka
[Android Q&A, Help & Troubleshooting] haerwu:
Even forum for "Atom based tablets from different vendors" would be enough.
[Android Q&A, Help & Troubleshooting] RaawrItsTomi:
Has this happened to anyone?

I installed the lollipop OTA, factory reset so it's clean and i installed only one app (Telegram Messenger) and i didn't touch the tablet for a few days fully charged it and opened play store to download Antutu. For some reason after it reached like 50% the screen went all black except for some stripes that were all vertical. After that i thought i got into a boot loop because the tablet did this exact same thing right before the boot animation came, but on the third try it actually booted and seems to function normally. This never happened to me on kit kat, anybody else experienced this?
[Android Q&A, Help & Troubleshooting] Spitras:
Good to hear it, great job! been following this thread for a while.

Unfortunately Im also on Boot Failed: EFI Hard Drive, but seems i dont have all necessary files to come back to life :D How should i get back droidboot and stock recovery? Can someone share it? Thanks
[Android Q&A, Help & Troubleshooting] social-design-concepts:
I had suggested to them a section for Intel Android Based Devices too. I really would be beneficial as Intel Android Devices are a different bread and currently a small community Intel device owners would truly benefit with the information in one place instead of having to find similar device and their respected thread.
[Android Q&A, Help & Troubleshooting] haerwu:
http://xdaforums.com/showpost.php?p=63601931&postcount=19422 posted
[Android Q&A, Help & Troubleshooting] Minto107:
Not S8-80 but S8-50 ;)

Wysłane z mojego GT-I9305 przy użyciu Tapatalka
[Android Q&A, Help & Troubleshooting] Shump:
I'm not sure if this is covered somewhere in this thread. I came across and easy way to change the DPI back to what it was set to in the original ROM. No root required.

Instructions for reverting back to the original DPI settings:

1. Install ADB on your system. If you are on windows, I recommend "Minimal ADB and Fastboot" - http://xdaforums.com/showthread.php?t=2317790

2. Go to your S8-50 settings menu, scroll to the bottom to the "About Tablet" section. Keep tapping the "Build Number" section until you enable develop options.

3. Go to developer options and enable USB debugging mode.

4. Connect your tablet to your computer. Your tablet will pop up a prompt asking for an RSA key confirmation. Choose "Remember this computer" and allow authorization.

5. Run ADB (type in ADB at the windows screen in Windows 8 or in the search box when you press the windows key in Windows 7). This should open a black console window.

6. Type in adb devices to ensure that your device is connected.

It should say "List of devices attached" and something below it.

If your device does not show up, install the S8-50 drivers

(when you plug in your tablet, you should see a Lenovo CD drive in My Computer that has the tablet driver software).

If your device says "Unauthorized", unplug and replug and authorize the RSA key when that prompt appears.​

7. Make sure tablet is in portrait mode. Change DPI and resolution using the following commands:

adb shell wm density 240

adb shell wm size reset​

If you mess up, you can revert to Lenovo original settings using:​

adb shell wm size reset

adb shell wm density reset​

Thanks pdinc from the Lenovo forums.
[Android Q&A, Help & Troubleshooting] Duju:
Update

I am installing the OTA on my S8-50L right now. They have released it.
[Android Q&A, Help & Troubleshooting] Minto107:
Also downloading now :D

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

---------- Post added at 08:35 AM ---------- Previous post was at 08:20 AM ----------

Damn installation failed with status 1... What could happen? :crying: right now it's doing something I don't understand

Wysłane z mojego GT-I9305 przy użyciu Tapatalka

---------- Post added at 08:37 AM ---------- Previous post was at 08:35 AM ----------

Wtf it failed but it looks like it got updated...

Wysłane z mojego GT-I9305 przy użyciu Tapatalka

---------- Post added at 08:41 AM ---------- Previous post was at 08:37 AM ----------

Anyhow it worked ???

Wysłane z mojego GT-I9305 przy użyciu Tapatalka
[Android Q&A, Help & Troubleshooting] Duju:
Dude, clean your screen

I like lollipop on this tablet so far.
[Android Q&A, Help & Troubleshooting] mackhenri:
So the wait goes on and on for me. But glad you guys got it, so its seems LC should get it too on its planned date.

Cheers
[Android Q&A, Help & Troubleshooting] Lander00:
So I'm waiting for LC version. 05.11.2015 is planned date?
[Android Q&A, Help & Troubleshooting] mackhenri:
Yup..hopefully.. And then soon we should have few roms for the tab
[Android Q&A, Help & Troubleshooting] Minto107:
Lollipop on LTE is bugless so far when Wi-Fi users has some. You'll probably get bugless firmware too ;)

Wysłane z mojego Lenovo TAB S8-50L przy użyciu Tapatalka
[Android Q&A, Help & Troubleshooting] dinghammer:
I don't know if this will be useful to anyone else, but I had a problem and fixed it, so I thought I'd share what I did. I'm using Windows 2003, so this may only apply to that OS, but if it also happens on XP or other versions, it might actually help somebody.

After upgrading to Lollipop, I tried rooting my tablet using the method described in that other thread, but I got the "E:No valid installer medium found" error after the tablet rebooted. I could always connect via ADB while the tablet was in Android, but I just got "waiting for device" when it was showing the bootloader.

At the same time this was happening, my computer was showing the New Hardware Installation Wizard, but it wouldn't accept any of the .inf files installed by Lenovo_TAB_S850_V1.0.1.msi.

While trying to make this work, one thing I tried was running Lenovo Smart Assistant, thinking it might install the right driver... and it did! You don't have to do anything in the Smart Assistant -- just start it, and it'll install the driver as it's connecting to the tablet.

Once that installed the driver, the temporary recovery session immediately started, and I was able to complete the remaining steps.

Thanks to social-design-concepts for writing that script and the guide, and to everyone else who rooted successfully, which kept me from giving up.
[Android Q&A, Help & Troubleshooting] hama2:
i will back to 4.4:(

5.0.1 are verry bad .. Battery fast Low.. and o lt of settings not found..
[Android Q&A, Help & Troubleshooting] social-design-concepts:
Lenovo TAB S8-50L ROW : http://tabdl.ota.lenovomm.com/dls/v6/S8-50L_S000456_151016_ROW_WC74.zip

---------- Post added at 04:52 AM ---------- Previous post was at 04:50 AM ----------

Your device still has multi user?
[Android Q&A, Help & Troubleshooting] Minto107:
Nope, and also it's conflict with DPI(set to 240, in build.prop is 320) so SwiftKey needs to be fixed(just need access to my PC) of course root lost but no battery drain, but overheating is back, also battery life has decreased slightly, about 1hr of screen on time, Dolby is fully working, if anybody wishes I can provide files from my tablet to help you fix yours, also performance seems to be a bit worse in some games. Was it worth updating? I'm not so sure, probably I should stay on KitKat but I hope Lenovo will fix overheating and battery life in next updates(probably 2016???)

Wysłane z mojego GT-I9305 przy użyciu Tapatalka

---------- Post added at 11:03 AM ---------- Previous post was at 10:57 AM ----------

PS. No multi user is not a bug its only lost feature, honestly I dont think that anyone was using it???

Wysłane z mojego Lenovo TAB S8-50L przy użyciu Tapatalka
[Android Q&A, Help & Troubleshooting] Epil0g:
Am I missing something? how to install it through pft without xml file? I want to update it manually.

edit: im trying to flash it through adb, i converted system.new.dat to img with sdat2img but when i try to flash it im getting "Invalid sparse file format at header magi" and fastboot crashes. Any ideas?
[Android Q&A, Help & Troubleshooting] itasoulas:
I use kernel Auditor. But in order to set the value you need buybox. Without it it won't keep the value you set!

Right now I am making a clean full back up on my sd card and upload it later on. It is always comes handy!!! I am talking about the L variant
[Android Q&A, Help & Troubleshooting] Minto107:
I'll do it by a classic way. By editing build.prop, then problem is over

Wysłane z mojego GT-I9305 przy użyciu Tapatalka
[Android Q&A, Help & Troubleshooting] social-design-concepts:
Just install it by ota. But your problem is you need to img2simg to flash first
[Android Q&A, Help & Troubleshooting] khanghua:
my LC is waiting for that update, too...
[Android Q&A, Help & Troubleshooting] luckypatak:
Hello ..did Ya find some fix for this problem?
[Android Q&A, Help & Troubleshooting] itasoulas:
Ok , a few things I noticed after the Lollipop update:

1. I don't know if it is my imagination but screen does not respond to touches as well as on KK. Like I need to press harder sometimes in order for my touch to register.

2. Using Google Now launcher and the app drawer animation is kinda slow and laggy even after set all animation to 0.5 speed

Anyways, nice to see lollipop on this device. We need a few days to register all issues present. Hoping to see some minor/bug fixing updates after a month or two? I am also uploading right now a clean, full cwm backup for S8-50L and will get back with the link.
[Android Q&A, Help & Troubleshooting] social-design-concepts:
sorry at work no time to write instructions, the problem is that Intel devices have a bad habit of installing as adb devices when in fastboot mode. you need to go into windows device manager while on the command waiting screen, locate the device and manually install the android bootloader drivers. hopefully someone else may have some more time to write more detail instructions on installing the correct drivers.
[Android Q&A, Help & Troubleshooting] puderbub:
Hello,

sorry my english is bad.

I got two two question.:

With this root i can usw sound over USB/ogt to my esi Dr. DAC nano and UPnP?

Copa my music Form PC to sdcard?

It works with Lenovo TAB S8-50L and Lenovo TAB S8-50LC?

Tanks for gold news :p
[Android Q&A, Help & Troubleshooting] jazzespresso:
only thing I can say, flash back full firmware to your device.
[Android Q&A, Help & Troubleshooting] samarashi:
Is there any way to do that-flash back full firmware- without make it root!
[Android Q&A, Help & Troubleshooting] jazzespresso:
all full firmware comes as official firmware, so no root included. You need to download your device's firmware and unzip it, there's usually a word document included which outlines how to flash back full-firmware back to your device.

Another thing you can try, if you haven't, do data reset/factory reset thru settings and then try to see if all good, once it is good, allow firmware upgrade...
[Android Q&A, Help & Troubleshooting] samarashi:
Where can I find a " full firmware comes as official firmware"?

I try the secondary suggestion -even wipe all data- but no change in my condition.
[Android Q&A, Help & Troubleshooting] jazzespresso:
what version you have? check settings --> about , and tell what says in build number, software version, and hardware version...
[Android Q&A, Help & Troubleshooting] samarashi:
Hardware version: Lenovopad TABS8-50LC

Software version: tabs8-50LC-150121

Build number: tabs8-50lc-s000200-150121-row
[Android Q&A, Help & Troubleshooting] jazzespresso:
take a look at here:

TABS8-50LC

my device is pure WiFi model, so not sure about yours, I believe LC comes with two variant of device, one is with data only and other is data + LTE voice...

you need to hunt down the firmware version that your tablet come with it (not upgrade one, means when you bought it and first time you open it)...

also you may ping [MENTION=1485619]tigr72[/MENTION] he may able to post instruction how to flash back stock firmware to device..
[Android Q&A, Help & Troubleshooting] samarashi:
how to install it?

i try this way:

0-extract the rar file and compress it using zip

1-copy file to my tab internal memory

2-setting > about the tablet>system update>(suite case icon)>install the specified package>(select the package from file explorer)

3-after restarting, the display is like this:

-opening update package

-verify update package

-E:end of footer from ......name and address of file...............not 0xFFFF(file exist)

-E:signature verification failed

-E:install of .........name and address of file............... failed with status 2

I try this process with two file in ru site and get the same answer:

-tabs8-50lc_lte_voice_row_ww14_s000200_150121

-tabs8-50lc_s139_141010_ww14_bmain_row_us

extra: I copy the zip file on a memory but after restarting it said that can not find the package for update!

any more thing to do?
[Android Q&A, Help & Troubleshooting] samarashi:
Thank you jazzespresso

such a wonderful help you done to me!

regards
[Android Q&A, Help & Troubleshooting] jazzespresso:
please report it back if you get successfully flash firmware, so that I can re-post this on first OP post for others to benefit..
[Android Q&A, Help & Troubleshooting] samarashi:
Dear jazzespresso

now a day i have a flashed tab,working file,downgraded to first stage!

Call and WiFi become available together and the resolution is OK now!

Regards
[Android Q&A, Help & Troubleshooting] jazzespresso:
so you followed my instruction above and able to flash stock firmware and now everything is working?
[Android Q&A, Help & Troubleshooting] sirxdroid:
How can we update to the latest ROM? The tablet says there is an update available but it can't download it because my tablet is encrypted. The suggestion is to factory reset it (don't want to redo the setup) or use an external sdcard which I don't have. Any other ways to update it, e.g. using an OTG flash drive or CWM?
[Android Q&A, Help & Troubleshooting] jazzespresso:
"tablet is encrypted" ?? then disable encryption...table encryption should be disabled out of box, so you probably enycrpt tablet (settings --> security --> encyrpt tablet), you need to disable it...
[Android Q&A, Help & Troubleshooting] sirxdroid:
As far as I know the only way to remove encryption is to factory reset the device. I do not want to lose all the data. Yes, I know I could do a Titanium Backup or an adb backup and restore, but it's very surprising that once the device is encrypted you can't apply a software update. That is not the case with the Nexus devices for example.
[Android Q&A, Help & Troubleshooting] axlslash_gnr:
Thanks a lot for this thread. I was successfully able to flash stock ROM.. :good:
[Android Q&A, Help & Troubleshooting] jazzespresso:
Unfurtantely only way to go back is factory-reset. I never use encyption any of my tablet it is because it costs the performance and some weird issues after encrypted tablet, here's some useful info at androidauthority.com

http://www.androidauthority.com/how-to-encrypt-android-device-326700/

"Encryption is irreversible. You cannot toggle encryption on or off. The only way to remove it is to perform a factory reset, which also wipes your device’s data."
[Android Q&A, Help & Troubleshooting] jazzespresso:
Custom ROM [B]JazzROM_Lenovo_TABS8-50F_v1.0

Hi All,

I have finished building custom ROM JazzROM_Lenovo_TABS8-50F_v1.0.

This is pre-rooted, int-d support, deodexed, busybox installed, and several other improvements.

This is, obviously, only for S8-50F (WiFi) model only.

Now, because this is Intel devices, getting this flash it to our device and able to boot it is quite challenging even if I cook the ROM using android kitchen.

I have update CWM flasable zip using update.script, so this should be compitable with CWM Recovery for Lenovo S8-50F, means when we use CWM recovery (based on instruction provided), this JazzROM_Lenovo_TABS8-50F_v1.0.zip should flash it OK, but there's always a risk involves.

I don't have my tablet with me as my wife took it with her on business trip, so I can't test the ROM.

If some of you willing to test the ROM, you should PM me...Please keep in mind that testing a custom ROM is risky, so you need to know how to do full nandroid backup (using CWM) of your tablet and able to restore it back.

Before you PM me, make sure you can able to do full nandroid backup and then able to restore it back, so that if something does not works with this ROM, you can always restore it back the way it was.
[Android Q&A, Help & Troubleshooting] Minto107:
First bug found on TAB S8-50L:

You can't turn off lock screen. I set it to off but it still exists... I don't use lockscreen at all because I have Lenovo Smart Cover

Wysłane z mojego Lenovo TAB S8-50L przy użyciu Tapatalka
[Android Q&A, Help & Troubleshooting] TommyDN:
I can turn it off fine. (S8-50F)
[Android Q&A, Help & Troubleshooting] Minto107:
I'm on S8-50L LTE model, I got lollipop today and ure on WiFi model and you don't have this issue as you can see ;)

Wysłane z mojego Lenovo TAB S8-50L przy użyciu Tapatalka
[Android Q&A, Help & Troubleshooting] Twenga:
i lost my root after updat to lolipop, can somebody help me?
[Android Q&A, Help & Troubleshooting] Minto107:
Just get again to temporary recovery and reflash root zip

Wysłane z mojego Lenovo TAB S8-50L przy użyciu Tapatalka
[Android Q&A, Help & Troubleshooting] Twenga:
thank u bro, but i did it already dont work, please help!!
[Android Q&A, Help & Troubleshooting] social-design-concepts:
Trigger T4 it works
[Android Q&A, Help & Troubleshooting] Twenga:
when i flash root zip on my internal card i get

e:failed to verify whole file signature
[Android Q&A, Help & Troubleshooting] itasoulas:
cwm backup for S8-50L (CLEAN)

http://www.filedropper.com/cwmbackups8-50ls000456151016row
[Android Q&A, Help & Troubleshooting] luckypatak:
Thankss...i made it ,awesome instructions....respect ,wish Ya great day .
[Android Q&A, Help & Troubleshooting] Twenga:
Can somebody please help me root my tab 50f lollipop
[Android Q&A, Help & Troubleshooting] Epil0g:
My tablet originaly is LTE version, then i installed LC soft to check it out. Now when I recovered back to LTE soft again using CWM I can't install any OTA because droidboot gives me error that my device isn't S8-50L but LC. Anyway to fix this?

Edit : Fixed. I erased everything but data in fastboot, and pushed via adb cwm backup and restored it in temp cwm. Im finally on 5.0.1 :)
[Android Q&A, Help & Troubleshooting] tatoone:
The same.

Inviato dal mio LG-H815 utilizzando Tapatalk
[Android Q&A, Help & Troubleshooting] itasoulas:
Then I am not crazy!!! :D

One thing I also noticed, which is very nice to see, is that when tablet is idle I get a flat line on battery stats. The standby time is really amazing even with data always on. No battery drain for me. AWESOME!!!! :D

EDIT: disable hw overlays now works (was broken on KK) and I can finally use CF Lumen to calibrate my display's color temperature which is awesome. And works great without having an impact on performance

---------- Post added at 11:22 AM ---------- Previous post was at 11:01 AM ----------

JUST TO SUM IT UP FOR S8-50L_S000456_151016_ROW

http://tabdl.ota.lenovomm.com/dls/v6/S8-50L_S000456_151016_ROW_WC74.zip

(thanks to social-design-concepts)

http://www.filedropper.com/s8-50ls000456151016row

(uploaded by me just in case first is down)

http://www.filedropper.com/cwmbackups8-50ls000456151016row

(clean cwm backup done by me, no personal data, accounts etc...)

The last comes very handy as you can return to original state after rooting the tablet or made modifications that cannot be reverted with a factory reset or need to receive a new OTA and cannot due to the modifications you made on the device such as rooting, deleted apps, etc... It wise to unroot first, then restore your device using this method. After that and after the first boot, do a factory reset. Just unzip the folder as it is on your sd card (not internal storage).
[Android Q&A, Help & Troubleshooting] TommyDN:
Just to mention on my S8-50F the CWM backups dont restore properly, only the TWRP ones do. Also link doesn't work.