yashsingh1/xdaforums huggingface dataset:
[Android Q&A, Help & Troubleshooting] cinnamonagouti:
bootloop S8-50L lollipop after cwm restore

Thank you, Minto107 for your fast reply. I´m not sure if I know what you mean with "wipe /system" -in cwm there is only a "format /system" option - is this what you mean? :confused: Now I did as follows with cwm: wipe dalvik cache, format /system, format /data, format /cache, then restore my backup from external sd card. Is that correct?

The same result: showing the lenovo logo two times then going into recovery mode.

Is my tab soft bricked now? :crying:

What about the S8-50L_S000456_151016_ROW.zip which is posted from itasoulas in post 995? A try to flash with it? Or any possibility with phone flash tool?

Seems the only way is to wait for a way to downgrade to KK, and then flash the LC stock firmware with phone flash tool???

What if bringing a soft-bricked tab to lenovo???

Please, any help is welcome!!!!
[Android Q&A, Help & Troubleshooting] Minto107:
Yes it means format

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---------- Post added at 05:09 PM ---------- Previous post was at 05:08 PM ----------

And you need to reflash backup

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---------- Post added at 05:09 PM ---------- Previous post was at 05:09 PM ----------

And then it should work properly ;)

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[Android Q&A, Help & Troubleshooting] cinnamonagouti:
Could you please declare what you mean with need to "reflash backup"??? Isnt´t that I did several times without success? Is there another way??? I´m a bit desperate...

Thanks a lot!!!
[Android Q&A, Help & Troubleshooting] mac231us:
thanks Minto...I see you are working overtime fixing all our issues:)

.sorry to also load you with one of mine..thanks when you get a chance. The error I have was reported before but in going over all messages I could not confirm if those folks like smogan1 etc ever fixed their issue of the Boot Failed. EFI Hard Drive.

Thanks hope can find a solution here (and publish it so future other folks can use it)
[Android Q&A, Help & Troubleshooting] Minto107:
Reflash means just restore backup. After full wipe/format (,format cache, dalvik/ART, system, data) and then try to restore backup, but wait. You're using CWM??? If so it's normal u can't restore your backup. This CWM version doesn't support lollipop. You can only restore KitKat. Get TWRP backup and you'll be fine ;)

Have you tried previous solutions provided by SDC? if yes I'll try to look for my self for another solution. Write down please what you've done already

Wysłane z mojego Lenovo TAB S8-50L przy użyciu Tapatalka
[Android Q&A, Help & Troubleshooting] cinnamonagouti:
Thank you very much for your great efforts, Minto107!!!

Okay, now it´s clear : I didn´t read anything that this cwm doesn´t support lollipop - too late now :crying:

So if anyone in this forum has a twrp backup from S8-50L or LC lollipop or knows a link to download, please, please let me know!!!

Thanks in advance!

Update: There is a twrp backup from member J0s3f in post http://xdaforums.com/showpost.php?p=63771650&postcount=1134

Also member mac231us wants to put up a LC TRWP Backup soon
[Android Q&A, Help & Troubleshooting] mac231us:
I looked at the messages but was not clear on what needs to be done (some of the communication between SDC and smogan1 for example were through PM so I gathered)

first what is 3 button boot (my guess was hold power and both up and down ends of volume)...if so, what after that? (my guess was to release power as soon as vibration is felt)

I tried the fastboot flash boot droidboot.img and fastboot flash boot boot.img

(taking droidboot and boot from the LL partial rom S8-50LC_S000456_151016_ROW_WCC5)

both failed see attached image

How did I get to this?

I was following this...(rollback to 4.4 from LL 5.0)

(removed url stuff so that it is not rejected or called out)

z5h64q92x9.net/proxy_u/ru-en.en/lenovo-forums.ru/topic/15149-откат-с-android-50-на-44/?p=431634

or

lenovo-forums.ru/topic/15149-откат-с-android-50-на-44/?p=431634

I was flashing the repair-bios.xml which failed around 66-70%

then it was still able to go to fastboot

then I thought maybe it is a bad cable and port..so I switched usb cables and port...then it just sat there doing something but the progress bar in flash tool was not moving sitting at 0%...after about 20 mins I disconnected...did not know what else to do

and then I have this Boot Failed. EFI Hard Drive

and it will not go to droidboot or fastboot

I tried the 3 button start or whatever one calls it (again my interpretation of what it is ...described above-if wrong please let me know) and flashed the droidboot.img...when I release the power it seems to flash but then says failed...on screen of tablet I only see fastboot starting and it just sits there (but obviously not really starting or progressing)

am not doing more attempts for now until get some firm advice (as worried about battery heard it does not charge when in such a mode...I know i had upwards of 68-70% when the flash failed)
[Android Q&A, Help & Troubleshooting] mac231us:
I have an LC LL TWRP backup however it has lots of data too (how can I post it without my personal stuff in there?)
[Android Q&A, Help & Troubleshooting] cinnamonagouti:
Need a twrp lollipop backup for L Version

Hi, you did a great job. My cwm backups don´t boot after restoring. Do you have a twrp backup without data which could you share??? Would be very helpful! :D
[Android Q&A, Help & Troubleshooting] Minto107:
I'll look for that ;)

You can't flash boot or droidboot because you have locked bootloader if it's not signed properly try to unlock bootloader using method provided by Banmeifyouwant ;) I haven't tried it by myself but many reports it works so and I think it will help you ;) have you tried SDC formatting partition table method? It was mentioned here before then flash L backup on TWRP and your tablet will work again ;)

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---------- Post added at 06:44 PM ---------- Previous post was at 06:41 PM ----------

This is backup made by me on my S3 4G. It was done with PhilZ CWM but files should be same named. Every file with data in name is your personal data. Do an archive that contains everything excluding data archives and this will be backup without your personal data ;)

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[Android Q&A, Help & Troubleshooting] cinnamonagouti:
Need a twrp lollipop backup for L Version

I think the only way is to do a trwp backup after factory reset - that´s what I can´t expect from you - I know....

But maybe there is someone who did that....

Thanks!!!:o
[Android Q&A, Help & Troubleshooting] Micalus:
You can't unless you make a new backup of your actual system, then you have to factory reset your whole tablet and make a 2nd clean backup of your tablet for the guy who needs it. after that you can restore the backup with all your data i mentioned. Otherwise i don't know if there is a way to get rid of all personal data from a made backup. Maybe someone else could help.

---------- Post added at 06:56 PM ---------- Previous post was at 06:52 PM ----------

I wish i could help you but i only have the S8-50F version of the Tab, but mentioned above if someone with the other version would be so kind to make 1. a personal backup to restore later and 2. a clean backup for you.

i guess that is the only way and i am pretty sure someone will do it for you :).

But sorry i can't BUT i would if i could :D
[Android Q&A, Help & Troubleshooting] mac231us:
Is this the one

Am looking for the balika011 tool no success unless you know where that is (lots of messages even on miui thanking the person who made it but no link as such)...will look at the SDC formatting method though initial search for any post by SDC for this has not turned up anything

EDIT

somewhere yesterday I found a tool s8unlocker...is that the one? (SEE attached picture..this is what I see when I run it (the balika tool) but then what do I just plug it in when off or need to something...STILL UNCLEAR on what the 3 button boot or power up method is..could you explain if you know..SDC has used that terminology few times) THANKS!

I will try to make a new TWRP backup without data from the original backup and see if I can post it (just don't anyone else to get issues!)
[Android Q&A, Help & Troubleshooting] mac231us:
this is what i see in my (useless for now) TWRP LC backup (don't think data can be isolated yes/no?)

see attached picture
[Android Q&A, Help & Troubleshooting] Micalus:
From what i see, no your personal data can't be deleted from this backup.
[Android Q&A, Help & Troubleshooting] Minto107:
You can check which partitions you want to backup

Yeah it's S8 unlocker, since we have only 3 buttons I bet it's about Power and volume buttons. In HTC you had to hold buttons until vibration and HTC logo appeared on screen. In Samsung it's same. Hold 3 buttons since S3 logo appears. Try like I mentioned. If it won't work try holding both 3 buttons without pulling any of buttons ;)

Attach picture of directory with your backup ;) I'll look in to it

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[Android Q&A, Help & Troubleshooting] mac231us:
i attached twrp backup picture in previous post

here it is

also see access denied when i try to tun the balika tool...any suggestions.. thanks

(odd thing is first time do not think it did that but I did not plug the tablet in)

EDIT figured the access denied..just had to kill existing adb process
[Android Q&A, Help & Troubleshooting] Minto107:
It seems like the modem.zip is data. It takes 8GB. Try to open it with WinRAR and post screenshots here. I will shortly take a look at this ADB problem. But it says access denied this is strange. Try to unpack S8unlocker to directly to C:/S8unlocker

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[Android Q&A, Help & Troubleshooting] Saponature:
Hey, can anyone please upload the filebrowser.apk and the filebrowser_row.odex

I have removed them and now im not being able to update OTA

Thanks a lot!
[Android Q&A, Help & Troubleshooting] TommyDN:
The 'fastboot format' only works on the linux version of fastboot.
[Android Q&A, Help & Troubleshooting] mac231us:
Back on ll>>>>and correct picture of LC backup in case anyone interested
[Android Q&A, Help & Troubleshooting] mac231us:
now that my LC is back working again I can do a factory reset and make a TWRP,,maybe I should just in case anyway..but it is an LC..is that ok for you? thought in your initial request an LC was fine. (and rooted or unrooted? as I have both backups..only thing is I will be off to work shortly and without PC will not be able to do anything until like 10-11 hours later)
[Android Q&A, Help & Troubleshooting] cinnamonagouti:
Hello mac231us!

This would be great and of course Minto107 is right that there´s an option in TRWP to check the parts you want to backup!

So I think you check all except "data" - right? And don´t hurry - if you´ll make my tab coming "back to life", I´d be so happy :D! That you have an LC shouldn´t be a problem for many members flashes succesfully their L to LC....

Thanks!
[Android Q&A, Help & Troubleshooting] mac231us:
OK I will do the backup without data layer this evening and out it up on ms drive
[Android Q&A, Help & Troubleshooting] Minto107:
Yup you can flash LC firmware on L without any problems ;) we're running same hardware

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[Android Q&A, Help & Troubleshooting] Spitras:
used guide from russian lenovo forums http://lenovo-forums.ru/topic/15149-откат-с-android-50-на-44/ everything worked great, got back to KK and finnaly can use my Tab again! :D thanks everyone for help :)
[Android Q&A, Help & Troubleshooting] umby75:
Hi, I've just bought this Tablet used and the seller told me that it is a Lte one.

But He specifico that after the S8-50 there is only L letter.

Then this Tablet should be active for voice calling. Or not?

What do you think?

Anyway id it is not enabled Can I getto the voice calling funtion in some way?

Sent from Note 4 device - Rome - Italy
[Android Q&A, Help & Troubleshooting] cinnamonagouti:
Hi Spitras,

if you successfully downgraded to Kitkat, it would be great to tell the members in this forum in English how you did. May be you could upload all the necessary files somewhere? And at last: which version of the S8-50 do you have? Does it work for all the 3 versions of our tab?

I think many members would be grateful for more information from you. :D
[Android Q&A, Help & Troubleshooting] mac231us:
I will try this later this evening after the non-data TWRP backup

thanks

that is the same link I posted without url stuff and was following it when I ran into the flash issue ...did you do the bios repair thing? first before the kk flash or not at all?

dumb me..I think i did not do the unlocker thing first before doing the guide steps,,hence i ran into the flashing issue terminating at 66%
[Android Q&A, Help & Troubleshooting] Minto107:
Hah someone did that before me ;) poor me ;) glad that there's a guide and tool for that but I will stay on lollipop. After modifying some settings it works very good and new BIOS is a key to use custom ROMs ;) (also performance is way better than on 4.4)

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[Android Q&A, Help & Troubleshooting] cinnamonagouti:
Lollipop TWRP Backups for the L and LC versions!

Thank you very much for your work and uploading your twrp backup for the S8-50L :good:

I downloaded it, unzipped it in the twrp folder on my external sd card, startet twrp temp session and successfully restored your backup: et voilà - my tab is back to life :victory: :victory: :victory:

(for interest: it´s unrooted, without data and with 253 dpi - as CPU-Z says)

I´m so happy it works!!! :laugh::laugh::laugh

As you see, there´s a lollipop twrp backup for the L version, uploaded by J0s3f! Nethertheless it would be really great if you could upload your twrp backup for the LC version!!!:D So we would have a backup for every version here in this very helpful forum. Thank you very much, mac231usc:good:

Hi Minto107, also thank you for your great work here. I´m waiting for your further results in improving our tab!:good:

Thanks to all here for your work and help!
[Android Q&A, Help & Troubleshooting] mac231us:
the thing I cannot get past is the horrible touch performance on LL..typing anything is such a pain...seems to be working well for you? (know at least 2-3 more users have complained here about the same issue)...just wondering if it is device dependent

---------- Post added at 05:56 PM ---------- Previous post was at 05:48 PM ----------

see post

http://xdaforums.com/showpost.php?p=63879784&postcount=1215

you can flash LC firmware on L version and get voice calling it seems (ask Minto107 and cinnamonagouti or search in this board)
[Android Q&A, Help & Troubleshooting] cinnamonagouti:
Well, mac231us I just feel the same! That´s why I´d like to downgrade to kitkat -but waiting for an easy and safe way to do - after my "waterloo" ;) But I´m sure that this won´t take too much time.
[Android Q&A, Help & Troubleshooting] mac231us:
Hello Spitras

when you run the unlock tool what does it shown on the screen? how do you know it works (by trying the flash of kk? or is there something it says..in my case it says success but at the end it shows the access denied..have usb debugging enabled no issue there...still not got google android bootloader interface driver installed...maybe that is the issue?)

it says unlocked (some code 3) says success and rebooted the device...

is it ok to flash now per the other website forum gude?

EDIT..update no it did not work flash failed at 66% during format so guess need the unlocker to work (it did not)...so maybe coming down to the android bootloader interface which I am unable to get/pull up...when I choose google in that interface (uncheck supported devices) i only see ROM master adb interface and rom composite adb interface. I installed android sdk tools put it in path ...extras which may hold the google usb driver is not installing

something or the other...maybe have to uninstall all drivers, deview devices, remove sdk, java etc and start fresh

back on the pathetically unresponsive LL
[Android Q&A, Help & Troubleshooting] Minto107:
It looks like it done unlocking. It flashed bootloader to your S8 and output is OKAY. It means like it should work

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[Android Q&A, Help & Troubleshooting] Minto107:
PS. It's not a code ;) :3 is not anyhow connected with IT ;) it's teenagers slang ;) like <3?? am I the only one who is just 15????

Wysłane z mojego Lenovo TAB S8-50L przy użyciu Tapatalka
[Android Q&A, Help & Troubleshooting] umby75:
How does it work about Lenovo devices.

Will I lose the warranty if I install LC firmware on device comes with L firmware by factory?

And if do I root it?

Sent from Note 4 device - Rome - Italy
[Android Q&A, Help & Troubleshooting] mac231us:
ha ha ...well with so many issues trying to get back to KK I would have never guessed in a million years...and am over 3 times 15...so yes, am out of that league.
[Android Q&A, Help & Troubleshooting] Minto107:
It's understandable ;) my parents are over 40 and they also don't understand anything from our slang and after 3hrs per day on Messenger you need to know all of them ;)

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[Android Q&A, Help & Troubleshooting] mac231us:
WORKED...flash tool had to be updated

In reading the RU forum further (had read but missed out on this)...this is maybe the reason for my 66% flash failure

"comes to 66 percent and says error: wipe_block_device: wipe not supported on non-linux platforms ERROR : Port 0/1/4: Flash failure. Do everything according to the instructions..

Figured out, everything works, the problem was in Flash Tools , there was a version 5.2.4, so it should be noted that the stitched version 5.2.4"

need to find out what this stitched version is of the flash tool

found the 5.2.4 version but not sure what this stitched version is

https://01.org/android-ia/downloads/intel-phone-flash-tool-lite

in reading the translation again understood that the 5.2.4 IS this 'stitched' version...also did advanced installation it used Intel dnx driver
[Android Q&A, Help & Troubleshooting] cinnamonagouti:
So, "old man" (I´m too ;) ), seems you´re still on trying to get kitkat. Will wait for your success...

What about your clean twrp backup? It´s ready and working? Could you please get it somewhere to download? Would be great :D
[Android Q&A, Help & Troubleshooting] Minto107:
On RU forums should be everything you need ;) the only thing I miss is S8-50L stock firmware

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[Android Q&A, Help & Troubleshooting] mac231us:
it worked see my post above...unfortunately have to leave now

I will upload the LC TWRP tonight..last night I started the upload it took so long and had to reboot because was doing other things to get to KK...tonight will leave it on...may take all night...2.6GB compressed zip file for the entire TWRP backup folder without data

http://xdaforums.com/showpost.php?p=63887458&postcount=1224
[Android Q&A, Help & Troubleshooting] Minto107:
Is there anyone who tried going back to KitKat and did it? If so they can help you be user I'm out of ideas. I think its just drivers. Can you use fastboot on your computer? If you don't know just try it

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[Android Q&A, Help & Troubleshooting] mac231us:
It worked..am back on KK... I had edited my post... saying it worked....the flash error was because of flash tool version not sure if OP has the latest called out.
[Android Q&A, Help & Troubleshooting] Minto107:
Glad to hear that ;) remember to set country code ;)

Has anyone discovered a method to change 4G icon to LTE one? In my country we use LTE name

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[Android Q&A, Help & Troubleshooting] KainXSS:
Yup the downgrader worked for me also, finally back to kitkat.
[Android Q&A, Help & Troubleshooting] mac231us:
I saw that country code thing... Never had to do anything there.. Am in U.S...yes get 4g icon text but checking signal am on one of 2 LTE bands from my carrier...recall there is that option in xposed gravity tools or maybe also xblast and xutilities.
[Android Q&A, Help & Troubleshooting] mustyrash:
Does anyone know how to get exfat or NTFS support for the s8-50?

I've found this for the yoga 2 8.0 but I don't think it's working on lollipop

http://xdaforums.com/thinkpad-tablet/general/exfat-ntfs-drivers-lenovo-yoga-tablet-2-t3126394

Any tips or help will be great!
[Android Q&A, Help & Troubleshooting] Minto107:
If you will want to receive OTAs you have to set country code

It doesn't work on lollipop as they reported, mounting script is outdated

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[Android Q&A, Help & Troubleshooting] mac231us:
that is odd as yes I did not get a prompt for system update..but when I did go to check for an update sure enough there was one for KK..so did it and got to the latest KK...then tried again and like before saw the 1.1GB update available for going to LL (which I have not this time).
[Android Q&A, Help & Troubleshooting] Minto107:
If you want to get rid of this notification you can change in build.prop system version to latest one and it will tell you about next lollipop release

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[Android Q&A, Help & Troubleshooting] mjbe71:
bricked tablet when want to downgrade

hello everybody.

sorry for my bad English.

I have a 50LC that i upgraded to "S8-50LC_S000456_151016_ROW_WCC5" via "system update"

after that when i flashed "tabs8-50lc_s139_141010_ww14_bmain_row_us" via "Intel phone flash tool lite 5.2.4" flashing process became failed. after that when i power on the tablet just see this sentence >> "Boot Failed. EFI Hard Drive"

after that when i want to install TWRP or CWM recoveries i see errors. (See log)

copy needed files to our device
sending '/tmp/recovery.zip' (3623 KB)...
OKAY [ 0.175s]
writing '/tmp/recovery.zip'...
FAILED (remote: unknown command)
finished. total time: 0.193s
sending '/tmp/recovery.launcher' (704 KB)...
OKAY [ 0.041s]
writing '/tmp/recovery.launcher'...
FAILED (remote: unknown command)
finished. total time: 0.047s
we need to stop logcat before replacing it
...
FAILED (remote: unknown command)
finished. total time: 0.005s
sending '/system/bin/logcat' (349 KB)...
OKAY [ 0.023s]
writing '/system/bin/logcat'...
FAILED (remote: unknown command)
finished. total time: 0.030s

issue fastboot oem "stop_partitioning" command to start cwm recovery:
...
FAILED (remote: unknown command)
finished. total time: 0.005s

Update: i found solution in Russian forum :)
[Android Q&A, Help & Troubleshooting] corpcz:
Hi,

I have a problem with driver for flashing by Intel phone flash tool - there is no devices. If I install IntelAndroidDrvSetup1.10.0 nothing happend. I am able install device just as USB VCOM PORT by mediatek driver.

Does anybody have a scatter file for flashing by SP Flash tool? Or any drivers whitch will be ok with Intel flashing tool?

Thanks in advance!
[Android Q&A, Help & Troubleshooting] vipconai:
please help me, flash failed :crying::crying::crying:

---------- Post added at 04:43 PM ---------- Previous post was at 04:02 PM ----------

i don't have lenovo adb driver: "intel android adb interface "

please help me :crying::crying::crying:

lenovo tab s8-50 LC
[Android Q&A, Help & Troubleshooting] umby75:
Today the tablet has arrived and I have in my hands..

I confirm that is a L one and has installed 5.0.1 firmware.

Now I need to get the calls like LC model and I've no idea how can I do to have this feature.

You told me to take a look at that link but I don't find the right answer at my question.

On first page of this thread you have only an update of LC firmware.

And also I don't know the steps to load the new firmware.

Sent from Note 4 device - Rome - Italy