yashsingh1/xdaforums huggingface dataset:
[Android Q&A, Help & Troubleshooting] Minto107:
If I can get my PC working I can sync CM repos but so far I found lollipop not that bad as I thought it would be, Balika is working on custom Lenovo kernel, probably to fix battery drain completely but I would like to see Resurrection Remix or CM on our tablet but who has unlocked bootloader now? My tablet is practically brand new so unlocking bootloader is some kind of risk if something goes wrong or after that it will get hardly bricked or so. After I manage to repair my computer(probably Motherboard or PSU is damaged) I will at least try to build one but there will be one build, for L and LC users but probably it will work also on F but it will be telling you about not inserted USIM card ;)

Wysłane z mojego Lenovo TAB S8-50L przy użyciu Tapatalka
[Android Q&A, Help & Troubleshooting] dzidexx:
[MENTION=5209639]Micalus[/MENTION]

1. Give me any problem which you cannot solve without custom rom.

2. Give me link for working flashable/bootable custom recovery
[Android Q&A, Help & Troubleshooting] mac231us:
I can volunteer to go back to LL and unlock when you have something to do some basic tryouts on.. (I have the LC model) thanks
[Android Q&A, Help & Troubleshooting] emaxxim:
I hate lollipop too. But maybe the s8-50LC version is better in terms of performance and stability. I have the s8-50L and I'm wondering if I can use WhatsApp on it.
[Android Q&A, Help & Troubleshooting] TommyDN:
1. Horrible battery life, horrible auto contrasting of screen, horrible audio on speakers, need I say more?

2. balika011.me/dl/s8twrp.img - I haven't tested it yet but looks promising to me.
[Android Q&A, Help & Troubleshooting] qassem:
hi to all

this tablet was on android 5 i wanted to downgrad to 442 so download flash tool and firmware i flash system by adb on fastboot so fone hang on logo i wipe and format but not done

i open flash tool and try to flash by this flash start but stop on 75% i disconect fone

now my fone not go to recovery when i press vol show boot failed. EFI Hard Drive

and some times fastboot starting

iin this mode i cant write any file or recovery need help
[Android Q&A, Help & Troubleshooting] dzidexx:
Look here:

http://xdaforums.com/showpost.php?p=64068624&postcount=1342
[Android Q&A, Help & Troubleshooting] mac231us:
If you can get to the blank screen that only says fastboot starting (hold all up + down volume and power buttons down when off.. When it vibrates release power button only) then you should be able to use flash tool...Make sure it is latest version 5.4.2 I think.. I posted the download link for that tool more than once in my posts..it might also now be in the original post (OP) of this thread
[Android Q&A, Help & Troubleshooting] dzidexx:
Same people have same problems, some not.

S8twrp.img - try it.
[Android Q&A, Help & Troubleshooting] Minto107:
All things you mentioned in point 1 I fixed by myself ;) it's not that hard, only bug I found is touchscreen responsibility when you turn airplane mode off. Battery life is about 4-6hrs(4 while heavy gaming, 5 when using YT playing PSP games and 6 when watching 1080p videos from local storage)

2. You can grab TWRP from SDC temp recovery session. It's stored in recovery(I think) folder and flash it using fastboot files with command fastboot flash recovery recovery.img(change xxx.img to recovery.img)

Wysłane z mojego Lenovo TAB S8-50L przy użyciu Tapatalka
[Android Q&A, Help & Troubleshooting] TommyDN:
How did you fix the audio and screen contrasting?

The link I mentioned is for permanent recovery, yours is only temporary. And I don't think flashing the temporary recovery with fastboot as recovery partition will do any good.
[Android Q&A, Help & Troubleshooting] Minto107:
For audio you can just simply reflash dolby and for me it started working fine, screen contrasting? Honestly on my S8-50L I haven't experienced that so far.

What is the difference between TWRP by Balika and SDC? SDC's is permanent too. The script was flashing it temporarily but the img can't be temporary

Wysłane z mojego Lenovo TAB S8-50L przy użyciu Tapatalka
[Android Q&A, Help & Troubleshooting] Micalus:
So i tested the TWRP from the link given above and except it is kind of slow, backup and restore and mostly all other functions are working great on my S8-50F.

I don't know if this will work on the L or LC version.

I've uploaded the reco.img to androidfilehost. File is clean.

https://www.androidfilehost.com/?fid=24269982087008668 (flash it via adb "fastboot flash recovery s8twrp.img" and you have a permanent recovery)

thx to [MENTION=6112002]balika011[/MENTION]

Cheers

Mike
[Android Q&A, Help & Troubleshooting] philmein:
you can instal twrp permanent using flashify of the market saves using adb
[Android Q&A, Help & Troubleshooting] dzidexx:
Re s8twrp

I did try it today - only boot not flash. In bootloader mode and fastboot mode.

"fastboot boot recovery.img" - nothing happened - in bootloader only answer "okay" in fastboot mode restart or power off. "fastboot boot recovery recovery.img" gives an error.

With this PC, I did flash system.img (lenovo.ru KK) two weeks ago - "fastboot flash system.img". Fastboot devices - answer " baytrail...". Drivers, adb, fastboot are good.

How long did you wait for flash and reboot into twrp?
[Android Q&A, Help & Troubleshooting] Micalus:
First you have to unlock your device with the given S8unlocker posted several posts before. Someone explained it before, so i will not explain it again. Just search for it. After unlocking your device and rooting it, you simply can install it via flashify or ADB. You can download https://play.google.com/store/apps/details?id=simple.reboot.com&hl=en this will make it easier to reboot to bootloader. When i flashed the given recovery S8twrp.img it took around 1,6 seconds to finish via adb and if you reboot it to recovery it will take some time. i mentioned before and someone else too that the TWRP is really slow but it works well.

Made a backup (around 6,4 GB had to pick my 64gb microSD for it) and wiped the whole device and restored the backup.

So i'm waiting hopefully that someone will port cm12.1 to the tab.

Cheers

Mike
[Android Q&A, Help & Troubleshooting] stealthmushroom:
Hi people. Newbie here. After soft bricking my S8-50F reverting to KK I followed the Russian method to repair BIOS and reflash KK. At the bootloader screen I also have

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

Can someone tell me if this is OK or not?

The thread has been very helpful.

Thanks
[Android Q&A, Help & Troubleshooting] kiranchaitanya:
best tab

which one is best??
[Android Q&A, Help & Troubleshooting] szczesny:
Please help

Lenovo S8-50L

Friend, please help becouse that distorted sound is killing. My only prob after 5.0.1 is terrible sound. Dolby on or off- no differance, sound output is distroted even from lowest levels. On kitkat was perfect. Now only headphones work normall.

You had same prob ? Im sick of it.

How to flash that Dolby sound if thats helped ?

My prob is horribly distorted sound output to speakers, not only dolby problem.

Can you give step by step instruction ? :confused:

______________________

As for mentioned screen contrast i have it when gaming heavy 3d online etc. Its written throttling brightness ( but processors work the same clocking ) and it dims display to 1/3 or less. Its very annoying. Its possible to do something with it ?

Ok, sorry , most important is that distorted speaker sound.
[Android Q&A, Help & Troubleshooting] mac231us:
so you have to be on LL to use that recovery image?
[Android Q&A, Help & Troubleshooting] banmeifyouwant:
Should I release it?
[Android Q&A, Help & Troubleshooting] mac231us:
i say yes (although have an LC) thanks!
[Android Q&A, Help & Troubleshooting] Micalus:
I'm not sure about that, but since you needed Lollipop to unlock the device because the architecture of the device turns from x86 to x86_64, i guess so. If you downgrade to KK, the EFI of the device will also be resettet and i don't know if the TWRP given from [MENTION=6112002]balika011[/MENTION] will work with KK. I wouldn't try it. Since not only the EFI itself changed, the KK is based on Dalvik straight away and Lollipop is the first ART-based System from Android ( and 5.0.1. is the must unstable and unpatched version). Intel is a bit special with Android, not so easy like arm or arm64 based chips like Qualcomm. It is a bit more different to code and port for Intel devices (for me at least) as it is for devices like the Oneplus one or a Sony.

Even tho Lenovo needed endless time to release even the 5.0.1 in times we already have Android Marshmallow, for me the update is good (after a factory reset...)

Everything works on my S8-50F. No sound or WiFi issues, no display problem or brightness issues. Running perfectly smooth, rooted with SuperSU and flashed TWRP.

Now i hope for someone to port CM12.1 for it.

Cheers

Mike
[Android Q&A, Help & Troubleshooting] philmein:
Yes
[Android Q&A, Help & Troubleshooting] Minto107:
Yoga 2 port? Any chance of LTE variant support?

Wysłane z mojego GT-I9305 przy użyciu Tapatalka
[Android Q&A, Help & Troubleshooting] jazzespresso:
I really like to help, but can't really know what's going on with your tablet. The instruction (flashing stock firmware) should work fine. I have s8-50f tablet too, and I also flashed stock firmware way back following the same instruction, so instruction is OK. I got this instructions from Russian lenovo forum and translate it here. I also recommend you to revert it back to any change you made, try to unroot using SuperSU (go to settings and you should see the option), also make sure your build.prob file is stock one, not modified one. Sometimes stock firmware fails if some system files modified..

in addition, can't execute fastboot.exe, it is part of ADB command, means some reason it lost connection between your tablet and your PC. Before you do anything, make sure ADB is there and works...

to troubleshoot the ADB/fastboot, make sure everything is under the same folder (ADB, phone flash tool, stock firmware..etc), and try like that....it is possible that phone flash tool can't find ADB stuff.

hope it helps..
[Android Q&A, Help & Troubleshooting] gyb001:
Hello.

How do I install this?

I tried this but nothing happens:

CWM:

e:format_volume failed to unmount "/system"

Error while formating /system

fastboot:

D:\platform-tools>fastboot update JazzROM_Lenovo_TABS8-50F_v1.0.zip

archive does not contain 'android-info.txt'

archive does not contain 'android-product.txt'

error: update package has no android-info.txt or android-product.txt

D:\platform-tools>fastboot flash zip JazzROM_Lenovo_TABS8-50F_v1.0.zip

target reported max download size of 1273651200 bytes

sending 'zip' (1201916 KB)...

OKAY [ 69.437s]

writing 'zip'...

FAILED (remote: flash_cmds error!)

finished. total time: 70.698s
[Android Q&A, Help & Troubleshooting] jazzespresso:
problem is CWM flashing, it does not flashes correctly. Unfortunately, there's no work around until we come up a permanent custom recovery. the one posted in OS one only temporary one that partially works..
[Android Q&A, Help & Troubleshooting] lolwatpear:
Are they looking into it on the Russian forum?
[Android Q&A, Help & Troubleshooting] jazzespresso:
i went there and ping couple of users/developers, but no help :(

I did not give up yet...still trying to figure out..
[Android Q&A, Help & Troubleshooting] jazzespresso:
perfect looking forward to see it...it is all about getting right CWM and correct updater script...I will check CWM from that thread, but again it is Temporary CWM Recovery Session, no permement one yet, that's another thing...

anyway, share with me what you got...
[Android Q&A, Help & Troubleshooting] KainXSS:
yup its also temp

finished uploading it here it is, no modifications or root here though.

https://www.androidfilehost.com/?fid=95916177934547000
[Android Q&A, Help & Troubleshooting] noyoof:
Thank you ..
[Android Q&A, Help & Troubleshooting] tccc143:
Fast fast fast

I have to say.....I have owned just about every tablet out there from the $50 ones to the Tab Pro 12.2.........and this Lenovo is so much more zippier that even the octa-cores I have. The screen is amazing and the colors are so sharp. I only picked it up at Best Buy because it was an open box item for $100. Now that it is rooted, I am amazed the performance I am getting from it. This is definitely my new favorite tablet. If 5.0 ever comes out for this thing, it will make it even better.
[Android Q&A, Help & Troubleshooting] stas333:
Thank you. I changed the DAC1 to 163 163 and im finally happy with the volume. This was the only thing that bothered me about the tablet, volume too low.

I tried the 170 170 values, the tablet was loud but the sound was distorted so i used the dulby app adjust it a bit but then lowering to 163 163 made it perfect.
[Android Q&A, Help & Troubleshooting] KainXSS:
np
[Android Q&A, Help & Troubleshooting] jazzespresso:
don't you hate how loud the boot animation on this tablet? i wonder if anyway make it change...
[Android Q&A, Help & Troubleshooting] stas333:
mine doesnt play any sound on boot.
[Android Q&A, Help & Troubleshooting] smoo73:
Hi there!

I have the 50L-version and I am missing the phone functionality. Not to make phone calls it just would make it a lot easier to type in my prepaid codes. Now I have to take the SIM out and put it in my OPO to type it in.

Can anybody send me or upload the apk of the dialer app from the LC version? Maybe it works...

Thank you
[Android Q&A, Help & Troubleshooting] kandalph:
activate phone use

Hey, I am also looking for getting my S8-50l into S8-50lc!!

THX in front and happy Eastern☺
[Android Q&A, Help & Troubleshooting] highHopes:
Hello everyone,

is it possible to downgrade android from version 5.0 back to stock ROM 4.4.2? The lollipop update is just horrible, tablet freezes very often, dolby digital doesnt work, some apps crash often etc... This procedure doesnt work for 5.0:

http://xdaforums.com/showpost.php?p=58934356&postcount=90

Step 11 - tablet does not show up in Phone Flash Tool...

Thank you very much for any advice.
[Android Q&A, Help & Troubleshooting] sirxdroid:
There's a 5.0 for this tablet? I had no idea, mine doesn't show any available updates (not that I'd want to move to Lollipop, I haven't moved any of my Nexus devices yet).
[Android Q&A, Help & Troubleshooting] Yenupuri:
We are still on 4.4.2 mate. 5.0 has not been released for our device yet.
[Android Q&A, Help & Troubleshooting] highHopes:
It was released at least for my device :)

Look:

postimg.org/image/54q2ft4r9/
[Android Q&A, Help & Troubleshooting] banmeifyouwant:
Maybe after my exam period, in second half of Jan.:confused:

Yeah, I just started University in September. :cool:

Don't forget, I have only a wifi version, so it's hard to test LTE for me.:angel:

Also, nowadays I have to learn a lot, so atm I can release a beta version, but not a bug-free version.

When I have time, I'm working on it. ;)
[Android Q&A, Help & Troubleshooting] mac231us:
Can test LTE version whenever you have one thanks
[Android Q&A, Help & Troubleshooting] Minto107:
That would be nice to try Yoga 2 features on S8 ;) If you will try to port LTE variant ROM I can check it out ;)

Wysłane z mojego Lenovo TAB S8-50L przy użyciu Tapatalka
[Android Q&A, Help & Troubleshooting] banmeifyouwant:
If you are not using the LTE feature of your device, then you can just install wifi only rom.

It will work fine.
[Android Q&A, Help & Troubleshooting] Minto107:
I know I know ;) but from tim to time I use it so I wouldn't like to install ROM without LTE feature ;)

Wysłane z mojego Lenovo TAB S8-50L przy użyciu Tapatalka
[Android Q&A, Help & Troubleshooting] icanttinkofaname:
yes please!
[Android Q&A, Help & Troubleshooting] szczesny:
Hello ?

Can you answer and help about audio ? Many users have some serious problem with distorted sound on build in speakers. We're searching solution for weeks.

You saod reflashing Dolby helped. That resolved awfull sounding speakers ?

If so , can you give us step by step instruction ?

Many people dont know what to do with that. Need help.

:confused:
[Android Q&A, Help & Troubleshooting] RaawrItsTomi:
Yes, please!
[Android Q&A, Help & Troubleshooting] mackhenri:
Defo, pls release it.. I am ready too to test the LTE version.

Cheers
[Android Q&A, Help & Troubleshooting] Minto107:
You can flash Dolby Atmos from XDA and you're ready to go ;)

Wysłane z mojego GT-I9305 przy użyciu Tapatalka
[Android Q&A, Help & Troubleshooting] TommyDN:
Would rather see that custom kernel working so we can start developing roms.

---------- Post added at 12:42 PM ---------- Previous post was at 12:35 PM ----------

Any links on which one? there is only an ARM version on XDA..
[Android Q&A, Help & Troubleshooting] TommyDN:
Well any of the dolby zips either don't flash or don't do anything so that's a dead end.
[Android Q&A, Help & Troubleshooting] stealthmushroom:
Sooo, No help then. Have upgraded to LL again and not having issues. Just a bit concerned about the bootloader and whether I need to do anything with it. Any security issues really.
[Android Q&A, Help & Troubleshooting] cristi.badoi:
Try to disable that Dolby stuff, maybe it will help.

I know someone with another Lenovo tablet who had some sound issues. The simplest solution is to disable it.
[Android Q&A, Help & Troubleshooting] TommyDN:
Disabling makes the disortion even worse so i don't think its really a Dolby app bug.
[Android Q&A, Help & Troubleshooting] szczesny:
Ok, thanks :) , but can you answer couple of Questions ?

Did you had distorted sound from build in speakers ? Headphones work normall. As for next posts proposition. No . Dolby On - Off = does not make a differance.

Sound is damaged from lowest volume levels. I mean speakers sound like instantely overdriven by too much output. Terrible quality, totally incomperable to great quality from KK.

I want to know of your problem was same? For us Dolby isnt main problem maker. Sound without Dolby On is also overdriven and distorted.

If yes.

How i flash it? Do i need root? I dont have root for guarantee reasons.

You mean , go to recovery mode and select flash Dolby from a package of some sort ?

Can you give link to that procedure or instruction ??

Of course if you had same problem.

Thanks for answer.
[Android Q&A, Help & Troubleshooting] banmeifyouwant:
Beta preview rom.:angel:

https://balika011.me/dl/Lenovo_Tab_S8_VibeUI.zip

Give it a try. ;)

Bugs:

- Brightness can't be changed

- Internet not works over Bluetooth

- Multi window works wierdly

- Intelligent Switch not supported by the hw, but not removed
[Android Q&A, Help & Troubleshooting] nachiket_xda:
Wow first rom for our device :).

What are the features?
[Android Q&A, Help & Troubleshooting] KainXSS:
so this is ported from the yoga tab 2?

thanks alot for this, I have been looking for an update binary thats compatible with lollipop for a while now, the one I used on my old kitkat rom did not work anymore on lolli(didn't want to make one either).

:good:

also has anyone tried to edit the partition table to install a linux distro instead of android(instead of running live), If not could one not edit the partition table and change the sizes of system and data to very small sizes wouldn't the unused space be partition-able for linux(like on windows tabs) and then one could change the boot order in the bios to boot to something like fedlet instead.
[Android Q&A, Help & Troubleshooting] Shump:
I got rEFInd working by following this guide http://xdaforums.com/memo-pad-7/help/how-to-dual-boot-me176cx-part-1-t3183437

WARING: Do not attempt to install rEFInd unless you fully understand the output of the following commands: cat /proc/partitions, ./efibootmgr -v

It is very easy to soft-brick your device if you mess something up while trying to install rEFInd.

I haven't been brave enough to resize any partitions yet. After I do a full backup I will give it a try.
[Android Q&A, Help & Troubleshooting] banmeifyouwant:
It boots up well, but need thons of fixes and new drivers.

Our emmc has 13 parts, because of a bug ubuntu only supports 8.

Our wifi chip is not supported.

Our touchscreen needs some hacks in kernel.

etc, etc, etc...
[Android Q&A, Help & Troubleshooting] Mikhei777:
May be Windows is more interesting because we have the same device with win drivers.
[Android Q&A, Help & Troubleshooting] szczesny:
We ware not even answered if HE had problems with sound output or just stupid Dolby profiles .

Im talking about distorted sound on speakers and he didnt even answered what was hes problems.

Im not talking about dolby profiles or other little srupid problems. Here is BIG prob.

For sound just flash dolby atmos . And if its not dolby problem. Waste of time ?

Omg, even to flash it its written you must for best first remove old Dolby to not overwritten by new and cause problems.

What to do now with that stupid piece of crap ( now ) ? I and lot users want just normall sound quality. Posted on lenovo forum but their strategy is simple - just to not respond to massive 0.5.1 reclamations after update.

Man, i need normall soumd on speakers.. Never buy lenovo again if not fix quick. :(
[Android Q&A, Help & Troubleshooting] Micalus:
Would be quite nice to see windows on the tablet. But also CM12.1
[Android Q&A, Help & Troubleshooting] Lander00:
I gave LL second chance. Do we have working xposed on lollipop? Only thing I need is xposed.

Flashed dolby atmos and the speakers are ok, normal as it was on kitkat.
[Android Q&A, Help & Troubleshooting] szczesny:
So You had damaged and poor quality sound from speakers and flashing Dolby fix that ?

Do i need to remove Old dolby or just flash on old installation ? If not how to remove old installation ? Need root for it or no ?

____________________

Sec q. Its possible to do something with auto diming display to 1/4 when "overheat" ? Its crazy on LL. Tablet isnt even hot enough near camera zone but its constantly auto dimming display. Extra annoying.

Sorry,but you guys all are like enthuisiasts here and give answers like you know here each other for years. Enigmatic answers.

Need simple and accurate instruction for persons who have no idea how to " flash " ,change rom, what is CM12 etc. Must give them 100% accurate instruction to later not blame me for soft damage hardware.
[Android Q&A, Help & Troubleshooting] Lander00:
I've rooted my tablet. I used "Custom Recovery installing Temp CWM Session (method 2)" to get into recovery. And then installed Dolby atmos from xda. In my case, everything is working fine now.

I had before LL for one week and I didn't have such problem with dimming display. Maybe I have never overheated tab :)
[Android Q&A, Help & Troubleshooting] szczesny:
If You not playing Online games its harder to overheat. Heavy games do produce the heat and i noticed some simple rules in it.

Lowest heat- no modems, no wifi.

Highest heat producer - LTE modem on + online games, like Wot Blitz. That combo overheats tablet almost instantely. 3g produce less heat than LTE, and Wi-fi is the most cool.

LTE produce nice heat even just surfing on net.

You know, heavy games use tablet 10x more than just net surfing. Its non stop stress at 100%.

On kitkat diming display was much less noticable.

Back to subject. So You had speakers sounding very poor quality on LL and reflashing Dolby Atmos resolwed all ?

Becouse still dont know if you guys write about some dolby profiles or distorted sound quality from build in speakers ??

1. I do not have root. Its possible without root ? Guess not ?

2. You reflashed it on old version ? Becouse in Dolby Atmos thread they mention that it is good to first remove old dolby becouse overwriting problems may show. Some files and folders will be simply overwritten.

?

ps. If root, there is way to hide it later for service? backup etc?