yashsingh1/xdaforums huggingface dataset:
[Android Q&A, Help & Troubleshooting] mostandmore:
my tab stock at clockwork mode symbol

i tried first method to install cwm , it showed some processing , later stuck at clock work mode symbol at middle , then stuck at DROID BOOT , IT SHOWING ON THE SCREEN AS :

DROIDBOOT

___________

IFWI VERSION : SPARK_81.

SERIAL_NUM: BaytrailCA8F49C0

DROIDBOOT VERSION: 2.0

PRODUCT: S8-50LC

___________

SELECT- VOL_UP OR VOL-DOWN

EXCUTE - POWER OR CAMERA

REBOOT DROIDBOOT

REBOOT

RECOVERY

POWER OFF

AT BOTTOM OF TAB

E: installer device ignored

FASTBOOT INIT...

E: Failed to mount device '/dev/block/sda1' as installer artion using fs_type 'vfat'

ition using fs_'vfat'

E: installer device ignored

E: installer device ignored

E:No valid installer medium found.

FASTBOOT CMD WAITING...

Could not open /sys/ devices/virtual/backlight

im stuck at droid boot please help what i need to do i tried to reboot it again take me to droid boot

NOTE; I INSTALLED ISOC DRIVERS ALSO IS IT CAUSED ANY PROBLEM PLEASE HELP ME

Finally I re ran the 1st method to Temparary CWM its worked n I took backup n reboot finally my device working:)
[Android Q&A, Help & Troubleshooting] jazzespresso:
one of my friend has the same tablet, so he got the same error, his tablet is non-rooted, pure stock untouched version. so his OTA official update S8-50F_S000200_150121_ROW_TO_S8-50F_S000214_150629_ROW.zip fails with Status 2.

Anyway, he brought his tablet over, and asked me to help, but honestly told him "so this is un-temprered, not rooted, pure stock and still fails to get this OTA?", he said YES, well not much I could help him, tried adb sideload thru droidboot, but always fails with Status 2.

I know this is like 12MB very smal OTA update, and nothing major upgrade...but I am very surprised why OTA update from Lenovo fails with Status 2 even if his tablet is pure stock!!!

He tried to contact lenovo support, no help whatsoever! what a support, right?

if any of you able to get this update worked fine, drop here a message, and let us know, so I can pass it to my friend...
[Android Q&A, Help & Troubleshooting] Sam00r:
I got it installed but had to restore to factory defaults by flashing using the Intel software.
[Android Q&A, Help & Troubleshooting] sirxdroid:
No more little updates for me after the last one made WiFi a lot worse. Waiting for the L full image and I'm looking to start from scratch.
[Android Q&A, Help & Troubleshooting] social-design-concepts:
Twitter Campaign

Just got this twitter reply from lenovoUS & lenovoforums, I would continue to follow that thread - Amy will share as soon as we get news on this topic.

Please tweet to lenovoforums and you regional lenovo until someone provides answers.

The upgrade matrix claims the TAB S8-50F got lollipop in July but no one has seen it to date. I hope you all will share this twitter campaign for answers and transparency with any other forums you all follow.
[Android Q&A, Help & Troubleshooting] tatoone:
Sorry, but the root metod in first page work with 50L

And this firmware is the same for 50L?

version?tabs8-50lc_s139_141010_ww14_bmain_row_us.rar

Thanks.
[Android Q&A, Help & Troubleshooting] lanthanhbp@gmail.com:
Xin Lỗi. Tôi là người ViệtNam ( VietNam) Tôi sử dụng Tab S8-50LC và Tôi muốn Root chiếc máy tính bảng này. nhưng không thành công với

Root (method 1): - - a big thank (спасибо) to Xakep [MENTION=1485619]tigr72[/MENTION] at Lenovo-forums.ru

Root_S8-50LC_tab

This is for S8-50LC, but it works for S8-50F too. Download it your PC (windows only) and hook up your tablet to your PC, and double click on Root_S8-50LC_tab.exe, it should flash SuperSu and root your device.

it is important that your device can be recognized by ADB command in order to root tool work (test your adb connection: adb devices, make sure it connects to your device)

Check [MENTION=6102505]Hash.H[/MENTION]'s post here for detail instruction; Official "How To" root Lenovo Tab S8-50

sảy ra lỗi. máy tính bảng khởi động lại rất nhiều lần.

còn về phương pháp 2. vì Tôi không hiểu nên không thể làm điều đó. nó quá phức tạp.

có giải pháp nào Root trực tiếp trên máy tính bảng và sẽ thành công không. Các Bạn có thể giúp được thì Tôi cám ơn rất nhiều..! Cám Ơn đã đọc qua.
[Android Q&A, Help & Troubleshooting] social-design-concepts:
So today being pissed that Android 5 ota has yet to come to this devices I decided to flash the leaked Android 5 from page 19 of this thread simply to see what all the fuss was about.

Well after 2 hours of playing with it I can honestly say, I don't know why I would even want it on a tablet on a phone I could see how the revamped interface might make things more fluid and easier to use, but for a tablet I just don't think the concept of a singular ux works it just doesn't feel natural, Google really needs to reconsider bringing back the tablet ux.
[Android Q&A, Help & Troubleshooting] smogan:
S8-50F_S000200_150121_ROW_TO_S8-50F_S000214_150629_ROW.zip

Here ist the lastet Update S8-50F_S000200_150121_ROW_TO_S8-50F_S000214_150629_ROW.zip (~12MB)

http://www.xup.in/dl,12159903/S8-50F_S000200_150121_ROW_TO_S8-50F_S000214_150629_ROW.zip/

[MENTION=4758472]jazzespresso[/MENTION]

Please Mirror to androidfilehost.com :)
[Android Q&A, Help & Troubleshooting] rob46os:
Hello people,

I am a brand new owner of a brand new Lenovo Tab S8-50 L version.... the WiFi + 4G minus the calling feature.

Now, I was very tempted by another 8 Tablet (fonepad 8) with calling feature.... but I decided to buy the Lenovo after

reading this thread, with many owners of the L version that flashed the LC firmware and got the Dialer fully working.

My doubt now is only one: I have read that once you flash the LC stock firmware, there is no going back... because there is no L stock firmware on the net.

At the moment I have done only the unboxing: I have not downloaded the OTA, or anything else.

My question is: If I want to save the stock firmware on my S8-50L as it is now... in order to (maybe) return back from the LC firmware... what I have to do?

Nandroid backup with CWM it's the only option I have... or there are other procedures?

(I'm not a very skilled user: done a lot of rom flashing in the past with Nexus ONE / Nexus S / other 5-6 devices... but often following very well written tutorials, and always very smoothly... without bricking or other big issues)

Thank you very much in advance, and sorry for my English!
[Android Q&A, Help & Troubleshooting] social-design-concepts:
Use my new version and use TWRP be sure to back up system_image and send me everything (boot recovery fastboot esp system_image) including lastest ota so i can validate the system_image and i will pack it up for phone flash tool and we will finally have factory roms for all three or the ROW Devices. . .

http://xdaforums.com/android/development/intel-android-devices-root-temp-cwm-t2975096
[Android Q&A, Help & Troubleshooting] tatoone:
I have the the S8-50L model. In the files that You have requested (boot recovery fastboot esp system_image) there are information as IMEI and serial?

If not I can give you this file because I have already make a backup.

I got the temporary recovery and root with the T3 option of your script. THANKS.

Sorry for my terrible english.
[Android Q&A, Help & Troubleshooting] social-design-concepts:
No both of those are embedded into the hardware if gets written anywhere it be in /config or /factory
[Android Q&A, Help & Troubleshooting] tatoone:
Sorry, in my twrp backup I have two files: system and system_image.

I have already restore original firmware used system files.

It's rirgt)

What is the system_image?

Grazie.
[Android Q&A, Help & Troubleshooting] Minto107:
I'm also an owner of S8-50L ;) right now I haven't rooted it because it works smooth and well. My firmware

And why do I have such old firmware if I bought it new 3 days ago in my local shop?

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

---------- Post added at 09:29 AM ---------- Previous post was at 09:24 AM ----------

I won't update my TAB S8 because of DPI change even to lollipop ;) I like 240. My S3 LTE has 320... Worst DPI resolution ever... Always I drop it down to 240. PS. I know now to drop it down to 240 in this tablet. I just never update my devices(my s3 was on 4.1 till yesterday :D)

Wysłane z mojego Lenovo TAB S8-50L przy użyciu Tapatalka
[Android Q&A, Help & Troubleshooting] social-design-concepts:
system_image is exactly what it sounds like its the back up of the system partition as a raw block image while system is the more traditional back up of the files under /system
[Android Q&A, Help & Troubleshooting] tatoone:
So, what is the best for restore?

system_image I think.

Now i update the file on my cloud so I geive you the link for download. Thanks
[Android Q&A, Help & Troubleshooting] Minto107:
Guys will 141124 update drop down my resolution? I really wouldn't like to root my tablet because it works so smooth ;)

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

---------- Post added at 12:25 PM ---------- Previous post was at 11:34 AM ----------

PS. anybody found newer updates better for gaming? Some games seems not to run smooth where my old S3 works just fine. I've been thinking of updating to 141124 because it's last update before resolution change. What do you think? Has new updates increased performance?

Wysłane z mojego Lenovo TAB S8-50L przy użyciu Tapatalka
[Android Q&A, Help & Troubleshooting] RedmanDR:
You don't have to root your tablet if you want to change DPI.
[Android Q&A, Help & Troubleshooting] Minto107:
Can you tell me how to do this? I would be very thankful if you can help me ;)

Sent from my SHV-E210S
[Android Q&A, Help & Troubleshooting] mustyrash:
It's on this page

https://forums.lenovo.com/t5/Lenovo...pdate-changes-resolution/td-p/1825209/page/18
[Android Q&A, Help & Troubleshooting] Minto107:
Thanks guys. Can I revert to original S8-50L firmware(I mean 140929)? Newest update is much worse than stock...

Wysłane z mojego Lenovo TAB S8-50L przy użyciu Tapatalka
[Android Q&A, Help & Troubleshooting] torryd81:
Side note...... any updates will change the dpi. Only the original rom has it at 320.
[Android Q&A, Help & Troubleshooting] Minto107:
Yeah I noticed that. Do you know what can I do to get back on first firmware?? I don't know why lenovo ****ed up updates for this tablet... On my S3 I noticed performance increase in comparing 4.1 to 4.4. I thought of flashing this ROM for LC model but I'm worried of bricking my tablet. Can anybody provide me backup/ROM from 140929? I would be very thankful

Wysłane z mojego Lenovo TAB S8-50L przy użyciu Tapatalka
[Android Q&A, Help & Troubleshooting] torryd81:
I think the rom for the s8-50F is here in this thread along with some of the updates. Look on the first page.
[Android Q&A, Help & Troubleshooting] Minto107:
But I have S8-50L and there isn't any firmware here

Sent from my SHV-E210S
[Android Q&A, Help & Troubleshooting] social-design-concepts:
[MENTION=646782]tatoone[/MENTION] supplied me with a fresh dump of their device I haven't had a chance but I'm going to package it for the phone flashtool once I get a chance to validate it but it's the Jan. 2015 version that the DPI changed in.
[Android Q&A, Help & Troubleshooting] Minto107:
Meh so I'll propably stay with my 141124(or may I should update, DPI changed so there's nothing left). But I can't. My carrier didn't released any new firmware... And I don't know if I can get rid of carrier bloatware... BTW, After restoring tablet to factory default, won't it get stock ROM too? MY older samsung s2 did something like this
[Android Q&A, Help & Troubleshooting] tatoone:
In this moment I have TABS8-50L_S000213_150618_ROW and I have DPI set to 240.

My TWRP backup is TABS8-50L_S000200_150121_ROW.

I gave the files to [MENTION=688394]Social[/MENTION]-desgin-concept for make the full rom.
[Android Q&A, Help & Troubleshooting] Minto107:
Hmm that's bad news... I can't live with stock keyboard and some of new firmware bugs! Like no sim card detected! I thought that I bought high quality product... But I was wrong... Never ever chinese device!!! And how about battery life on newer firmwares?(on this tablet it just sucks... I really miss my Tab 3 sometimes)

Wysłane z mojego Lenovo TAB S8-50L przy użyciu Tapatalka
[Android Q&A, Help & Troubleshooting] Sam00r:
Come on. You should've realised by now that this is a TERRIBLE tablet!
[Android Q&A, Help & Troubleshooting] tatoone:
For the keyboard you can use SwiftKey. The battery life is not very good. But the price if the tablet is good.

Inviato dal mio Lenovo TAB S8-50L utilizzando Tapatalk
[Android Q&A, Help & Troubleshooting] Minto107:
It doesn't work after updating... IT doesn't work after changing DPI back to 240

Sent from my SHV-E210S
[Android Q&A, Help & Troubleshooting] tatoone:
My dpi is 240 and SwiftKey work well. Now i'm writing with him.

Inviato dal mio Lenovo TAB S8-50L utilizzando Tapatalk

---------- Post added at 09:19 AM ---------- Previous post was at 09:18 AM ----------

Root your tablet is very easy. So You can setup your dpi.

Inviato dal mio Lenovo TAB S8-50L utilizzando Tapatalk
[Android Q&A, Help & Troubleshooting] Minto107:
I already set dpi ;) have you tested lollipop that is on page 19? It seems to have Dolby installed :D

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

---------- Post added at 10:01 AM ---------- Previous post was at 09:58 AM ----------

Not working ?

Wysłane z mojego Lenovo TAB S8-50L przy użyciu Tapatalka
[Android Q&A, Help & Troubleshooting] Minto107:
This tablet is pretty good but manufacturer is just simply bad. If it would be some of technology giants we would unlock bootloader, have CM12, our own forum on XDA... It's unpopular and I'm not familiar to this for last year(till I started using 3 variants of SamsungS3). But at least S8 is open source... I'll set up ubuntu on my backup laptop and try to build something(begining with CM11 of course ;))
[Android Q&A, Help & Troubleshooting] social-design-concepts:
The Android 5.0.1 ota on page 19 is for the S8-50F not sure where it was originally leaked from but requires modifications to the updater script, I ran it for a couple of days (only boot and system i didn't upgrade the uefi firmware) then switched back to 4.4.2 probably going to run it again today to see if the ota update server has a different address on that build.

I had that keyboard issue too I had to do a full factory reset to get it to display correctly but 240 would make some objects align incorrectly so I opted for 283.

A few lenovo devices that got lollipop ota in July (that were buggy and broke things like touch) started to see a new ota this week hopefully we will see soon. From the dates I've seen on builds it looks like L gets otas before F.

I used to keep telling my self one day soon. Can only hope Lenovo doesn't ruin the Moto brand.
[Android Q&A, Help & Troubleshooting] Minto107:
You said 283 dpi? Can you post here a screenshot? Just to compare with my 240dpi. Has it fixed bug with gallery in file explorers, keyboard and weather widget? I liked the new feature double tap to sleep in new firmwares ;) Can you tell me if I can make my device region free without loosing warranty? Thx for all mate! :D
[Android Q&A, Help & Troubleshooting] social-design-concepts:
Yeah I'll change it when I get to work I been running unmodified in hopes that the Lollipop ota would come any day
[Android Q&A, Help & Troubleshooting] Minto107:
I've seen that you can flash every firmware on every S8 variant. I can flash F firmware(of course there isn't any sense because I have LTE modem) and LC without any prob what is super cool :D I'll do a backup of most important things for me and try to factory reset later(maybe tomorrow or even later). Bugs found on newer firmware stops to annoy me so much :D I just stopped care about them :D so maybe even I just change DPI to 283, root it and let it how it is. Unfourtunately I run one of olders firmwares(141124) and when I updated and ****ed DPI up I think that there's nothing to loose and update to latest version. But how about carrier? If I will need warranty they may notice clean firmware... But nandroid of everything should be fine ;)
[Android Q&A, Help & Troubleshooting] Minto107:
Has anybody flashed Yoga 2 8 inch ROM. In theory it's possible. Everything is the same as on S8

Sent from my SHV-E210S
[Android Q&A, Help & Troubleshooting] icanttinkofaname:
I'd be keen to know this too. iirc, the yoga 2 has multi window support, which, on an 8inch tab would be super useful.
[Android Q&A, Help & Troubleshooting] Maheshwara:
... and it has official Lollipop [emoji4]
[Android Q&A, Help & Troubleshooting] Minto107:
Yeah Lollipop would be awesome. Also Yoga 2 firmware has more features than ours... Has anyone tied it already???

Wysłane z mojego Lenovo TAB S8-50L przy użyciu Tapatalka
[Android Q&A, Help & Troubleshooting] itasoulas:
https://forums.lenovo.com/t5/Lenovo...lipop-Full-Firmwares-publication/td-p/2151069

[PETITION] Tab S8-50 F/L/LC Lollipop Full Firmwares publication

MAKE THIS LOUD, JOIN AND COMMENT!
[Android Q&A, Help & Troubleshooting] itasoulas:
A little of topic but I think I may have found a permanent solution for the screen dimming issue after watching online videos via a browser or localy using a video player. I have decompiled the kernel from stock F version (which sadly I don't own anymore since I bought the L version. I cannot test myself cause there isn't a stock s8-50L firmware around so I can go back to if I mess up).

I unpacked the boot.img and on init.common.rc I think we have to make a few changes to fix the issue. Either delete lines 148, 149 or these 2 along with lines 154,155,156,157. I have seen an example on caynogenmod code review here http://review.cyanogenmod.org/#/c/106299/1/rootdir/etc/init.tab2.rc that completely removes the pvrsrvctl service

Here's a screen from my unpacked kernel. ANYONE WITH A LITTLE EXPERIENCE ON KERNELS AND A S8-50F WILLING TO TRY MY SOLUTION? :p
[Android Q&A, Help & Troubleshooting] social-design-concepts:
Brave but not STUPID ! ! ! !

Everything is for sure NOT THE SAME similar specs never equal same device, while i don't know the tiny little details of both the devices hardware they are not the same.

That would be nice. . . .

And so will this device eventually. . .

Well I'm brave but not stupid flashing a complete firmware for a device that has similar specs is just a bad idea. . . Being i helped a few Yoga 2 user with unbricking thier devices after bad Lollipop Updates flashing Lollipop from one of these wont work. Part of the L update is an upgrade to the core uefi / bios (don't point out that uefi and bios are not the same i know this bios is just there for people unfamiliar with what a uefi firmware is) currently our core uefi / bios firmware is 32bit part of the upgrade to lollipop on all the the intel baytrail devices i've seen including the yoga 2 830F is an upgrade to 64bit uefi / bios firmware so boothing the new 64bit boot images would be impossible on the 32bit uefi / bios firmware and arbitrarily flashing a uefi / bios firmware upgrade from another device no mater how similar is just a stupid bad idea especially if you don't own a programmer to reprogram a bad firmware flash.

Now with that out of the way i decided to see if the kitkat boot.img and system.img from the Yoga 2 830F would boot on this devices so other users wouldn't have to . we'll i can say it boots but it isn't usable the displays are incompatible and the display will be split in two 1 on top of each other and doesn't show the whole display i imagine this has to do with our tab being portrait and the Yoga being landscape. now it might be possible to heavily modify the system.img so that it would work with the stock S8-50F boot.img but would probably be more work than it would be useful. I would post pictures but my phone died over night. but i wanted to try this for you all so no one bricked their tabs just trying to flash it to their device
[Android Q&A, Help & Troubleshooting] Minto107:
Or do an old school. Port it how it's done for devices like S4 ports ROMs from Note 3. It's same here ;) systemui framework or just port whole firmware ;) but for Intel on x86 may be a bit different than on Arm7. Anyway why does we use x86 android instead of x64??? We have 64 bits CPU... It's a big waste of performance of this SoC on android in comparing to windows...

Sent from my SHV-E210S
[Android Q&A, Help & Troubleshooting] social-design-concepts:
That's what i was referring to it is alot of work and probably wouldn't be worth it until android-5.x.x

it wasn't until android-4.4.4 that Intel supported 64bit kernel 32bit user space on android and wasn't until at some point in android-5.x.x that Intel supported 64bit kernel 64bit user space on android. thats why we have a 32bit firmware.

none of those lines affect us our device doesn't use the pvr graphics or device is ufo gen 7 graphics. simply part of the intel common device build system. this is our backlight :

# ls /sys/class/backlight
intel_backlight
# ls /sys/class/backlight/intel_backlight
actual_brightness device subsystem
bl_power max_brightness type
brightness power uevent
# ls /sys/class/backlight/intel_backlight/brightness
/sys/class/backlight/intel_backlight/brightness
# cat /sys/class/backlight/intel_backlight/brightness
255

now you can change the value as root with:

# echo 55 > /sys/class/backlight/intel_backlight/brightness

anyways you know how to boot unsigned kernel images?
[Android Q&A, Help & Troubleshooting] Minto107:
And how about leak? Has it got 64bit android or we'll probably stay on 32bits?

Sent from my SHV-E210S
[Android Q&A, Help & Troubleshooting] social-design-concepts:
i suspect we'll get 64bit firmware with the ota,
[Android Q&A, Help & Troubleshooting] Minto107:
I hope that my carrier will release 5.x... last update was from 141124... while ur having 150629 may battery improved or performance and I don't have it... yeah I know that I can get a clean L software without my carrier stuff but I'm too lazy [emoji14] with having any of my phones just one PC connection to do what I want. Flashing recovery doing nandroid upload on my ftp and done :D I can do anything without risk ;) because I have recovery and I can flash ROM or kernel directly from my phone ;)

Sent from my SHV-E210S

---------- Post added at 12:46 AM ---------- Previous post was at 12:44 AM ----------

And hope for Dolby system ;) without it no upgrade for me ;) it's too good :D (of course Boeffla sound system is better but this is stock ;))

Sent from my SHV-E210S
[Android Q&A, Help & Troubleshooting] itasoulas:
Noooo... I am not familiar with kernels as far as building/modding. This issue pisses me of, that's why I started messing with it. So what you say is that the value you provided fixes the backlight going crazy? I see sys/class/backlight on root path but where exactly are those lines located? And the echo 55 which part of the lines actually replaces ? the # cat part or the # ls part?
[Android Q&A, Help & Troubleshooting] sashank18:
Hii

I know this is not correct place to ask this but...:crying: I'm so frustrated waiting for lollipop.

Has any one tried installing win 10 on this tab.I wanted to try but I don't know how to revert it back to Android if ....if we get Android l.

Thanks..:good:
[Android Q&A, Help & Troubleshooting] Minto107:
I dont have this issue anymore after update. My carrier software has fixed this.

Theoretically on this tablet we can have Windows because of compatible firmware but in practice Windows is close source. We can't do anything about it. So there isn't possibility to get Windows unless Lenovo would release it for us as OTA(what won't happen at all)

Wysłane z mojego Lenovo TAB S8-50L przy użyciu Tapatalka
[Android Q&A, Help & Troubleshooting] social-design-concepts:
I don't even know what this dimming issue is? could someone post a video showing it?

As for Windows 10 for now the issue is two fold 1 secure boot is enabled by default and 2 our Tabs don't have Microsoft Secure Boot keys load in the efi nvm, hopefully though as most other intel devices that got the 64bit uefi firmware currently ended up with Microsoft Secure Boot Keys loaded and the full uefi exposed. After that it's tracking down drivers but not impossible.