yashsingh1/xdaforums huggingface dataset:
[Android Q&A, Help & Troubleshooting] graphdarnell:
Took the time to read the whole thread. Was amazed at the amount of repetitive questions and, should I say, slothfulness that now make it daunting to waddle through. It could easily have been half its length.

Anyway, the normal procedure in this matter when you have a full TWRP backup (by SDC) would be to just flash it away, tethered or not. However, I have the feeling (and who can remember all 256 pages?) that it would not be the right procedure. In other words, you have to graduate from KK to LP through OTAs. Why is that?

Also, SDC posted a permanent TWRP some pages back. Is it the latest (3.0.3) as he said? Or that by Balinka on the previous page. Is it a later version or same old? Thank you very much Minto107 and social-design-concepts. Your patience is rarely seen in this forum. I can't remember which page to go back and click it, but I'm sure you'd understand SDC.
[Android Q&A, Help & Troubleshooting] mac231us:
no full LL rom, it was always an OTA ...ask Lenovo- :(

TWRP backups would be flashed normally through the temp TWRP interface ui (but to get to it, you have to manually install TWRP)

manual TWRP is in the OP itself (Balaika had the tool for unlocking bootloader to go back from LL to KK-which is yes, half of the requests-I got tired myself also responding to like maybe a dozen such requests, though it took me a couple of days to figure it out myself (asking questions but posted my findings and shared related files, backups) in Nov 2015-lol a while back)

minto, SDC are the gurus here imo

and then there is the permanent TWRP (slow but works)

the OP was done very well (given a relatively low user base here on xda)
[Android Q&A, Help & Troubleshooting] social-design-concepts:
TWRP 3.0.3

Lenovo Spark TWRP 3.0.3
[Android Q&A, Help & Troubleshooting] Minto107:
Thanks man I will give it a try in a few hours ;) any news about cyanogenmod aka lineageOS? [emoji14]

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---------- Post added at 06:02 PM ---------- Previous post was at 05:57 PM ----------

If tools in OP are not available(like balika's recovery) just hit me up. I have everything on my lenovo laptop???

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[Android Q&A, Help & Troubleshooting] social-design-concepts:
Still stuck on WiFi, missing some code to get it to completely turn on, but I think I'm on the correct path.
[Android Q&A, Help & Troubleshooting] Minto107:
TWRP works like a charm! Thanks for that mate ;) Glad to hear that you're close to get WiFi working :D how is HW acceleration? I think if you can sort out WiFi, HW acceleration and audio then most of us can use it as daily driver, LTE works horrible on lollipop but I must stick to it as I want to have custom recovery. Keep us informed and feel free to pm me with some experimental builds, I can test them in a free time ;)
[Android Q&A, Help & Troubleshooting] umby75:
Hi, I have got the version you can see in attachment and the original system is a "L" version

I don't know why, but often in calls the speaker ears me distorted and with strong ground noise.

How can I fix it?

Second question: the system asks me to upgrade the system. Do I have to agree?

Sent from Note 4 device - Rome - Italy
[Android Q&A, Help & Troubleshooting] Minto107:
Audio is ****ed since lollipop. So far I haven't found a fix for that. You can update to lollipop update 2 but it won't give you anything new. It's still same build. It's just security update. It breaks root and bootloader unlock as it's a deal breaker for me I stick to lollipop update 1

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[Android Q&A, Help & Troubleshooting] kmem:
Ladies and gentlemen, forgive me for asking but are any roms (even experimental) available for this device? My tablet is still running the last KitKat update before the dpi change. I have been following this thread since the device was released but haven't seen anything worth trying. I see social design concepts seems to be trying to make something work for the device but it seems his work is not complete. Since the bootloader can be unlocked is the lack of software support due to not enough knowledgeable people owning this device?

When I use the tablet I get depressed at the overall sluggishness, ugly/non-intuitive Lenovo overlay and bloatware, screen dimming bug, and the lack of a modern android version without severe issues.

I see complaints about lollipop so I never upgraded. Is lollipop less sluggish and bloated feeling than KitKat on the s8? I suppose I am a bit spoiled with my pure android nexus 5 which, while old, still remains snappy and lean.

I purchased three of these upon release for family members since the specs were very good as was the price. I had high hopes that developers would notice the device and eventually might figure out how to multi boot android/linux/windows much like the revered HTC hd2, but sadly this didn't happen. I think this is partially due to the low visibility of this thread. Is it impossible to get a dedicated sub forum for the s8? This long thread is not very efficient for users to find current and relevant information.

Thanks in advance for any responses!
[Android Q&A, Help & Troubleshooting] Minto107:
SDC is working on Nougat for our tablet. Other than that there is no ROM available for S8. You can update to latest KitKat. It's beast. Just change DPI back and you'll be happy like never

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[Android Q&A, Help & Troubleshooting] kmem:
Thank you Minto. You have been very helpful to users in this thread. I will attempt to go to the latest kk via OTAs if you think it runs smoother.
[Android Q&A, Help & Troubleshooting] Minto107:
Majorly it fixes dimming issue and performance in apps like YouTube or heavy games

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[Android Q&A, Help & Troubleshooting] graphdarnell:
I just finished fixing the hardware of the tab. Quick question for Minto107: I backuped the KK with SDC's temp TWRP. The link in the OP for linux didn't work for some reason though I'm sure I've used it before. Anyway, I should be able to restore the LP backup uploaded by SDC with temp TWRP; unlock the bootloader with Balika's tool, then install permanent TWRP 3.0.3, all in that order, correct? There's no need for me to upgrade gradually with the listed OTAs, is there?

Thanx in advance.
[Android Q&A, Help & Troubleshooting] Minto107:
Depends on which KitKat version you've been so far. If you were on the very last one then I think you can do that, however I highly recommend flashing all way back to stock with Intel flashtool just to make sure everything will go as we want

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[Android Q&A, Help & Troubleshooting] kmem:
How did you fix the hardware?
[Android Q&A, Help & Troubleshooting] graphdarnell:
I just attach a thumb of the about tab in settings for the sake of completeness (thumb 1). I'm pretty sure it's not the latest KK since I hit "update status" and it downloaded the first OTA in the OP. Except that it failed to update with stock recovery because I uninstalled some apps with Titanium.

I can always restore the tab to the original state with the TWRP backup and take it from there. Otherwise can I do it with Intel flashtool and the uploaded stock rom in the OP?

Edit:

I just upgraded through SYSTEM UPGRADE to OTA 15-01-15 which is the same as the first OTA in the OP (thumb 2) after stock restore. Is that the latest? Because system update shows a further OTA of 12M(?) (thumb 3) that consistently failed to download (S8-50F S000214_150629) . Is it still KK or something else? Do you know?
[Android Q&A, Help & Troubleshooting] graphdarnell:
I don't understand your question. What kind of hardware problem do you have?
[Android Q&A, Help & Troubleshooting] Minto107:
Update it again. Remaining one is last KitKat, then change DPI if you don't like 320

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[Android Q&A, Help & Troubleshooting] kmem:
Sorry I didn't quote. The above post was what I was referring to. I don't have a hardware problem.
[Android Q&A, Help & Troubleshooting] graphdarnell:
Does anybody have this OTA dated 06/15 (S8-50F_S000214_150629_ROW) uploaded anywhere? When I tried to download it from System Update it would pause the download with "connection timed out; download failed." Tried several times.

Better yet, a backup of the latest KK that can be flashed through temp TWRP would help people a lot.
[Android Q&A, Help & Troubleshooting] graphdarnell:
Decided I'd waited long enough and nobody had it. Nose-dived and wiped everything with TWRP; even formatted internal storage; and flashed LP backup (SDC's). For those with cold feet, don't fret. Works fine. No need to go from KK up. I updated LP, unlocked the bootloader, installed permanent TWRP, rooted it, and debloated the darn thing with Titanium. No glitch so far. Don't have enough storage to upload a backup though. Sorry.
[Android Q&A, Help & Troubleshooting] Minto107:
This tablet is almost dead because of its .1% popularity so there is almost no one to answer questions [emoji14]

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[Android Q&A, Help & Troubleshooting] Spryandolf:
Попробуйте спросить тут 4pda.ru/forum/index.php?showtopic=628319&view=findpost&p=5752402
[Android Q&A, Help & Troubleshooting] graphdarnell:
I don't know Russian and Google translate blows. But thanx anyway. If you see anything of relevance there, please let me know.

Я не знаю, русский и Google переводить удары. Но все равно спасибо. Если вы видите что-либо отношение там, пожалуйста, дайте мне знать.
[Android Q&A, Help & Troubleshooting] evolutionisbad:
I currently have this tablet rooted and on lollipop. Standby battery is terrible even with greenify and the dolby sound is broken. What is the most common / best setup for this device for battery life, especially on standby (in terrible for turning it off and it dies in a single day).

Cheers
[Android Q&A, Help & Troubleshooting] mac231us:
I think spryandoif was pointing to maybe this

https://cloud.mail.ru/public/GJ2N/MHLrMAf8T

at

http://4pda.ru/forum/index.php?showtopic=628319&st=2340

maybe he was just pointing to the board itself...regardless

that board has been one of the first on to this device where they had a downgrade process etc from LL to KK...great resource...translation is ok and need to fill in the blanks use guesswork

http://lenovo-forums.ru/topic/15149-откат-с-android-50-на-44/
[Android Q&A, Help & Troubleshooting] kmem:
This is what I was planning to do but reports of buggy touch, no dolby, and poor standby life have turned me off from going to LP. I would still love to see a virgin backup of the latest KK since we all seem have major problems snatching the OTAs.

It's a travesty to see a device such as this with more than decent hardware be virtually abandoned software-wise.

I may just root and debloat my build 140929 in the hopes that some of these spyware-ridden Lenovo apps are the root cause of my general lagginess and poor performance. I don't use the tab for games, mainly media (the speakers are fantastic) and browsing.
[Android Q&A, Help & Troubleshooting] abhijeet715:
How do you unlock the bootloader and install the twrp permanent. I couldn't see any way how to do this so im asking. I know this sounds as a noob question :/

---------- Post added at 06:41 AM ---------- Previous post was at 06:38 AM ----------

Has happened many times with me. Open the tab and unplug the battery by removing the screw above the locking mechanism for the battery's push fit thingy.. i do that and it works fine. Usually for me the android system or android os keeps draining a lot of battery in idle drain. Seriously lenovo roms suck, devices have a lot of potential

---------- Post added at 06:43 AM ---------- Previous post was at 06:41 AM ----------

My speakers suck a lot nowdays, or i guess its due to the lp firmware. My phone has a lot higher volume than the 2 speakers of this device, and i dont know why or how. I still remember this used to be the loudest device in my house :(
[Android Q&A, Help & Troubleshooting] evolutionisbad:
Does this fix the battery drain is sound issue?
[Android Q&A, Help & Troubleshooting] jazzespresso:
yeah I have been keep checking russian and chinesse forums to see if anyone able to post full firmware of lollipop, so far nothing yet, like you said, they have not officially pushed update yet, i am giving like couple more months to appear S8-50F full firmware of lollipop on the internet:p
[Android Q&A, Help & Troubleshooting] kandalph:
videos choppy, not smooth.....

....I have the second S8-50 right now. MFD ist 2015.01.20

I am not really happy in watching movies on this device (same on the second one). Streaming like Netflix, YT, or other web sources ist fine.

Videos on my device, SD or extSD, are far from satisfactory (IMHO). Antutu video test is giving me a 753 score, antutu bench

itself between 34-35K. MX Player, VLC (+beta) and stockplayer play the files with kinda (micro) choppy stream. All videos have

common formats. All those files are played very well on other tablet PC's (e.g. Asus Memo Pad FHD 10, Lifetab S8312) with less

features and power. So, day after day I'm more disappointed with this machine. I need to see if it's worth to keep it with

all the well known deficits at the moment.....
[Android Q&A, Help & Troubleshooting] Sam00r:
I don't think the kitbag rom has been very well developed. There's a lot of generic stuff in there that just gives me the impression its been hacked together.

Someone did say the lollipop rom was much faster, probably due to more polished drivers from Intel.
[Android Q&A, Help & Troubleshooting] jazzespresso:
Some of videos I have on my tablet plays pretty nice, and some like you said not so good. it depends on how the video decoded tell you the truth, also because of Intel chip crap. The Intel processor that comes with tablet not necessary slow cpu, it is actually quite good and fast, but when it comes to playing video it shows how bad it does the work.

depends on your warranty period of your tablet, you may return it, or wait until official lollipop update, which I heard fixes a lot of bugs.
[Android Q&A, Help & Troubleshooting] kandalph:
Thx jazzespresso, there is some more days (3-4), I will get my money back. Meaning, latest after 14 days of purchase. Just in case keeping the tablet, needs lots of hope for Lolliopop and of course that they'll fixing some things....
[Android Q&A, Help & Troubleshooting] icanttinkofaname:
Have you tried the xbmc (kodi) app? I play videos from my nas perfect. Never had an ounce of trouble.
[Android Q&A, Help & Troubleshooting] jazzespresso:
Turn off Intel Smart Video off (it is piece of garbage), and use MX Player (try with HD or SD option and see) - it is on setting, hardware decoding or software decoding options.

Another freebie advice to improve overall tablet performance; Set all these three settings listed below to .5x in Settings --> Developer Options

Window animation scale

Transaction animation scale

Animator duration scale
[Android Q&A, Help & Troubleshooting] kandalph:
[MENTION=4502374]icanttinkofaname[/MENTION]

Thx, I know it as I use it for streaming at home. Streaming from internet and homenetwork is doing pretty good. Only movies stored on SD or extSD do not play smooth.......Cpl of minutes ago I played ISO movie, stored on the tablet. This was doing great!!:good:

[MENTION=4758472]jazzespresso[/MENTION]

I also use MX Player pro. So you think results are getting better with disabled HW+? I thought so too by testing the different settings. I'll let you know as I've learned that ISO files are doing very good.....only thing: They're really huge....Anyhow. The extSD is 32GB. It should do it for now....

Btw: Restore and backup is doing great as well. Had to clean a few things in system and the build file ;)

There is no!!! difference in performance between S8-50L and S8-50LC. Same results on benchmarks, operating, and playing videos....
[Android Q&A, Help & Troubleshooting] icanttinkofaname:
You can play videos in kodi through the internet? From anywhere?! How?! Tell me your secrets!
[Android Q&A, Help & Troubleshooting] kandalph:
Search for xbmc/kodi addons ;) Lots of HOWTOs
[Android Q&A, Help & Troubleshooting] benutzer09:
"LC"-ROM works fine

Thanks to all contributors, with the information provided in this thread, I was able to upgrade my tablet to "LC"-ROM, with voice call support. :good: It just works fine.
[Android Q&A, Help & Troubleshooting] kandalph:
New update for S8-50LC??

Hi,

just got new update recommendation for the S8-50LC. I think Lenovo is changing it the last hours, because it always changes between 150121 and 150414....need to wait for it.
[Android Q&A, Help & Troubleshooting] Sam00r:
Would you be able to download the 150121 update and post the zip, and then do the same for 150414 aswell? You'd make a lot of people happy!
[Android Q&A, Help & Troubleshooting] kandalph:
Yep. I'll try my best as the download is very slow at the moment....
[Android Q&A, Help & Troubleshooting] kandalph:
First download finished after many hours and is corrupt! Second download is still in progress. It moves very quick to 65% and then stucks....... saying more than xxx hours left.

I'll let you know

I finished. Here is latest 2 updates for S8-50LC. The newest is from last night!!

It installed after some difficulties (downloadproblems, corrupt file) successfully. Strange is that once it shows the older update available, and some other times the new update info came up!! For all having problem for downloading different versions, I uploaded them here:

S8-50LC_S000139_141010_ROW_TO_S8-50LC_S000200_150121_ROW

S8-50LC_S000139_141010_ROW_TO_S8-50LC_S000204_150414_ROW (showing as ....150415 on the tablet)

I'll post som pics in a few....

http://xdaforums.com/picture.php?albumid=12127&pictureid=48974

http://xdaforums.com/picture.php?albumid=12127&pictureid=48975

http://xdaforums.com/picture.php?albumid=12127&pictureid=48976

Tablet successfully rooted with Root_S8-50LC_tab. So it looks ''easy'' this time .......

Hopefully they'll bring up android 5.xx soon for this.
[Android Q&A, Help & Troubleshooting] kandalph:
Of course it isn't...

It's still 4.4.2 KitKat with the latest available update S8-50LC_S000204_150414_ROW (showing as ....150415 on the tablet)
[Android Q&A, Help & Troubleshooting] jazzespresso:
Lenovo TAB S8-50 Lollopop Update

Hi All,

Please do keep in mind, lollipop update for Lenovo TAB S8-50 (all varients) probably around the corner, but don't jump in and update it right away if having root and xposed is important for you.

If you do, make sure you have full official firmware of 4.4.2 on handy in case you want to revert it back.
[Android Q&A, Help & Troubleshooting] jazzespresso:
download links does not work for me, upload them somewhere else, so I can put a link in OP (first post) for others.
[Android Q&A, Help & Troubleshooting] kandalph:
Update link S8-50LC

Uploaded on Google. Just place it on the OP. Thx

S8-50LC_S000139_141010_ROW_TO_S8-50LC_S000200_150121_ROW

S8-50LC_S000139_141010_ROW_TO_S8-50LC_S000204_150414_ROW (showing as ....150415 on the tablet)

I leave it for a few days before deleting.
[Android Q&A, Help & Troubleshooting] Maheshwara:
I have S8-50L version. Can it be upgraded to S8-50LC version by simply flashing LC ROM on it to extend its functionality with telephone support ?
[Android Q&A, Help & Troubleshooting] abhijeet715:
Battery drain gets fixed for me with this. My sound sucks though i dont know why

---------- Post added at 02:00 PM ---------- Previous post was at 01:59 PM ----------
[Android Q&A, Help & Troubleshooting] #MADHAN:
Is there a way I can get an ACPI dump of this tablet? Need it look into the acpi_bios_error BSOD with Windows on this tablet. I was only able to get memtest86+ plus to boot on this tablet.
[Android Q&A, Help & Troubleshooting] Minto107:
I'm not sure if you can do that, Windows logs doesn't show exact error with ACPI?
[Android Q&A, Help & Troubleshooting] graphdarnell:
[/COLOR]

Forgot this detail. You need to flash SDC's 3.0.3. You can't use the temp TWRP in the temp folder. Also, once you've done it, you need to restart into recovery again right away for it to stick. If you reboot into the OS first, TWRP is overwritten somehow. At least that was my experience.

As to Viper, I use this link. Can't remember exactly what I did, but I managed to install it.
[Android Q&A, Help & Troubleshooting] abhijeet715:
Means what i do is that i flash the temp recovery, and wait for it to automatically boot into recovery. after that i go to reboot menu in the recovery, and click reboot into recovery again ? Is that the right way ??
[Android Q&A, Help & Troubleshooting] graphdarnell:
[/COLOR]

Ok. Let's do it again.

You download 3.0.3 IMG and copy to your tab (external or internal storage don't matter).

You use SDC's tool to get to set up TWRP 2.8.70. Once in there, you hit "install." Inside that page, you hit "img" tab at right bottom. Navigate to TWRP 3.0.3, install it.

Once done, return to the main page of 2.8.7.0, hit "reboot."

In there you have the option "reboot to recovery." Hit that and wait for the tab to return to the 3.0.3 recovery.

Then reboot again to system. 3.0.3 should stick afterwards.

Have fun.
[Android Q&A, Help & Troubleshooting] abhijeet715:
Oh ok now i get it. In Had done this same thing previously with 2.8.70.

OEMs should really start using TWRP instead of their ****ty recoveries :p

Thankyou so much for bearing me and explaining all this, really appreciate it :)
[Android Q&A, Help & Troubleshooting] abhijeet715:
Tried this method. it gives some error on the boot screen and doesnt boot to 3.0.3 recovery :/ i dont know what can be done. i did just exactly as you explained. clicked some photos for the same. my tab is S8-50LC and im running lollipop.. please help :(
[Android Q&A, Help & Troubleshooting] Minto107:
DON'T FOLLOW THIS METHOD UNLESS YOU HAVE BOOTLOADER UNLOCKED!!!

Locked bootloader checks for image signature and it will fail while checking it, that's why there is bootloader unlocked, it doesn't check for signatures and allows you to boot any image that it can store on specified partition

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[Android Q&A, Help & Troubleshooting] abhijeet715:
I had unlocked the bootloader using the tool, but it said it only unlocks when on kitkat. Had done it before, but i had bricked my tab so had to restore it. Ill try once again. Possibly could you tell how to unlock the bootloader, is it the sane method as given in the OP ? If yes, ill try it asap, im just not at home now :'(
[Android Q&A, Help & Troubleshooting] Minto107:
I will check that in a moment, unlocking bootloader works only on S00456 firmware(lollipop from November 2015) as far as I know(maybe KitKat and second lollipop can work either, but I'm not sure about that)

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[Android Q&A, Help & Troubleshooting] #MADHAN:
There should be some way to dump the acpi tables. Ubuntu has a built in utility and also possible on Windows. Something is causing this acpi_bios_error BSOD. This tablet is actually very capable.
[Android Q&A, Help & Troubleshooting] mac231us:
there is hope....
[Android Q&A, Help & Troubleshooting] graphdarnell:
About this complaint that the battery drains fast with LP rom, I tested it while doing battery calibration by un-installing all bloatware, charged it to 100%, turn off wifi during sleep with advanced tab. It lasted 3 days. Don't know if it's optimal, but if you have to leave your tab on, 3 days ain't bad.

Wifi takes a few seconds to connect upon awakening, but if you're not asking for the moon, I'd say it's a small price to pay (what you gonna do with a few seconds you try to save anyways? I mean unless you're a whiner...).
[Android Q&A, Help & Troubleshooting] Minto107:
3 days standby? Well that's really bad... My phone with WiFi always on and data disabled lasted about a week without a charge...

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