Develop Bugs

[Q] Please Help Samsung Galaxy Tab 3 Flickering Screen!

hello i was wondering if there way anyone out there how could please help me with this screen flickering problem i have tried using clock work recovery i have used odin and reset my device a good 6 times today everything works fine its just the screen in flickering non stop no matter what i do it wont work but when i put it into download mode the screen is fine and on the start up when it says "Samsung Galaxy Tab 3" the screen is fine but it only is flickering when the device boots up can someone please help me i just received this as a gift for christmas and barely got any use out of it thanks you can contact me on my email it would be very appreciated :[email protected]

bigdaddywelker1 said:
hello i was wondering if there way anyone out there how could please help me with this screen flickering problem i have tried using clock work recovery i have used odin and reset my device a good 6 times today everything works fine its just the screen in flickering non stop no matter what i do it wont work but when i put it into download mode the screen is fine and on the start up when it says "Samsung Galaxy Tab 3" the screen is fine but it only is flickering when the device boots up can someone please help me i just received this as a gift for christmas and barely got any use out of it thanks you can contact me on my email it would be very appreciated :[email protected]
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Can make a picture, how it looks when its flickering and post this.
For me it looks like that is an bootloader Problem !!!
Have you testet when your go back to real stock, i mine flash stock Firmware with Odin , is that solved ????

Flickering screen
bierma32 said:
Can make a picture, how it looks when its flickering and post this.
For me it looks like that is an bootloader Problem !!!
Have you testet when your go back to real stock, i mine flash stock Firmware with Odin , is that solved ????
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How can I go back to real stock and un root this device I have the same problem. I only got it today and I am desperate

bsquirrell said:
How can I go back to real stock and un root this device I have the same problem. I only got it today and I am desperate
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Take a look to the thread " unbrick and restore " from Tomsgt here you find a guide

galaxy tab 3 7
I have finally managed to fix the flickering screen by re installing a new firmware. Odin 3.07 wouldnt work, but odin 3.185 did for some reason!!! Now is there a root for this that won't put me in this position again. I am sure this has been asked and answered somewhere else, but I can't find it.
The previous root I did installed an old firmware, which caused the problem,
The auto display feature on this tablet still leaves the screen too dark,so I have had to disable this feature. Anny ideas anyone, thank in advance for any help

bsquirrell said:
I have finally managed to fix the flickering screen by re installing a new firmware. Odin 3.07 wouldnt work, but odin 3.185 did for some reason!!! Now is there a root for this that won't put me in this position again. I am sure this has been asked and answered somewhere else, but I can't find it.
The previous root I did installed an old firmware, which caused the problem,
The auto display feature on this tablet still leaves the screen too dark,so I have had to disable this feature. Anny ideas anyone, thank in advance for any help
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Go to dev Thread and usw the thread Cwm for sm-t210/r
http://forum.xda-developers.com/showthread.php?t=2433853

I had the same issue when i was stuck on boot loop, install a different recovery, i used CWM, and then install a different rom. Allot of the stuff here works across different platforms and it works fine but sometimes it cause the flicker.... good luck

I think you went into the developer options and clicked on the show screen updates. It will flicker all the time until you disselect it.
Sent from my SM-T210 using xda app-developers app

[Q] Please HELP ME OUT

I have a big issue, I was trying today to root my galaxy note 3 from t-mobile USA. When the phone re-started there was a message on the screen saying:
recovery booting
Set warranty bit : Recovery
and it does that over and over again, reboot every 5 seconds and the same message. I can't even put the phone on download or recovery mode. I can't do anything.
Pleaseeee help me out I'm so desperated.
Thanks in advance.

DjFearless said:
I have a big issue, I was trying today to root my galaxy note 3 from t-mobile USA. When the phone re-started there was a message on the screen saying:
recovery booting
Set warranty bit : Recovery
and it does that over and over again, reboot every 5 seconds and the same message. I can't even put the phone on download or recovery mode. I can't do anything.
Pleaseeee help me out I'm so desperated.
Thanks in advance.
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Lol ............
They have like 30 diff threads asking the same exact thing you are. Take the time and read and self educate.
TWEAKED N3

Don't be so hard with me, I'm really new on this. Can you at least refer to me with one of those solutioned threads you say?

DjFearless said:
Don't be so hard with me, I'm really new on this. Can you at least refer to me with one of those solutioned threads you say?
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http://forum.xda-developers.com/showthread.php?t=2682396
Trust me it not personal and I have to be honest similar thread to yours was 5 down. I telling you this as someone who is not new to these forums. The guys here help out bid time but if they see you don't search or try and self help. When they see you don't search they will just ignore you. I have been one of the few guys who have helped guys out. Not for anything but I was once new as well a Dev pm me and set me straight and told me to stop asking questions.lol. I did and looked for my self and found my own way.
TWEAKED N3

Sm-T800 stuck at Samsung logo start screen

I'll preface this by saying I have searched the forums here and after reading a few threads about similar problems to mine, I haven't been able to find a solution. So, I'm making a new thread in the hopes you fine individuals will be able to help me troubleshoot what's going on.
The problem:
I was running CM 12 on my T800 for a while, but after some bugs and random reboot issues, I decided to give the new IronRom a shot. I went ahead and flashed it through TWRP and everything went swimmingly. I was able to set up the tablet and use it for a while. However, two days ago when my wife was using the tablet, it randomly restarted while she was using it and then froze at the Samsung startup screen. It would show the screen, then blink to black like the tablet had restarted, show the screen and repeat this about 4 or 5 times before freezing at the Samsung start screen.
What I have tried doing:
First thing I tried was home+power+volume up to get into TWRP and do a wipe and start over. But I cannot get into recovery. Once the tablet is frozen the only way to get it to restart is with a hard reset power+volume down, nothing done after that seems to make any difference.
Second, I realized I could still get into download mode, so using ODIN I tried going back to stock. Flashed the stock rom for my region but when Odin is done with the initial flash, it reboots the tablet and everything is the same. Frozen at the Samsung screen.
I've tried flash TWRP again, but once the tablet reboots after download mode, it just freezes at the Samsung screen.
Any suggestions at this point would be welcome.

last time i had this same trouble but on my T705. I had to wipe everything including the internal storage. only then the device boot properly.

edan1979 said:
last time i had this same trouble but on my T705. I had to wipe everything including the internal storage. only then the device boot properly.
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I would love to be able to, but as I said in the original post, I can't get the tablet to enter recovery, so I can't wipe it. The only thing I can get it to do is boot into download mode.

Hi, sorry to be that guy who bumps threads, but I'm still sitting here with a tablet I can't use and no more ideas on what I can do to fix it. I'd really appreciate any ideas at this point. Thanks again!

Drschplatt said:
Hi, sorry to be that guy who bumps threads, but I'm still sitting here with a tablet I can't use and no more ideas on what I can do to fix it. I'd really appreciate any ideas at this point. Thanks again!
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I had similar experience, and even started downloading official samsung image, with odin etc. However it looks like I was able to enter recovery if rebooting using the following sequence:
- power-vol_down-home combination until the screen goes black
- moving finger from volume-down to volume-up
-> waiting a few seconds (less than 10) until recovery screen shows up.
Then I just reinstalled the good old cm 12.1 (instead of the failing lineageos 14.1), and then all happy again.

Drschplatt said:
Hi, sorry to be that guy who bumps threads, but I'm still sitting here with a tablet I can't use and no more ideas on what I can do to fix it. I'd really appreciate any ideas at this point. Thanks again!
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Hallo.
Try this https://forum.xda-developers.com/ga...k-disaster-t2838473/post54618555#post54618555.
It work for me, when i have similar problem.

Carlosk1966 said:
Hallo.
Try this https://forum.xda-developers.com/ga...k-disaster-t2838473/post54618555#post54618555.
It work for me, when i have similar problem.
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Thanks for the link. I tried it but never could get the tablet turned off to see the battery icon. When I used the method in the link it just returned to the Samsung Galaxy Tab S startup screen

Drschplatt said:
Thanks for the link. I tried it but never could get the tablet turned off to see the battery icon. When I used the method in the link it just returned to the Samsung Galaxy Tab S startup screen
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Well that is not good. Like i said, it allways work for me, when i get bootloop.

Think ive killed it :/ Tab S2 T813

ok so bottom line is, I was in the middle of flashing official rom when at about 25% it failed. Don't ask why! (i still had recovery at this point) so I went ahead and cleaned absolutely everything thinking i'll just try and reflash as before. Now with power lead out it won't switch on at all and when power is supplied it shows message "An error has occured while udating the device software." loops at approx 3 sec intervals cant do anything with it.
Ive tried everything I can think of all to no avail! yes its my own fault bla bla bla just wondering if i act have f***** it.
Thanks to anyone with any ideas

You probably going to get a better help at TAB S2 board this is for the tab S1.
If it is hard bricked there is JTAG methods that can help, just need to find one for your device, not easy though.
But all I can do is share my experience with something like this, in a more "cheap" way than JTAGs, dunno if it helps:
I never had a similar problem on the tab S. But in the past a galaxy player 5.0 of mine had a very similar problem (as far I remember the screen just powered the back light but without any letters or simbols)
in 2012, I bricked it trying to mount a swap partition (280mb RAM ftw) accidentally pointing the wrong partition, and got the entire internal storage corrupted.. everything.. system, bootloader, recovery etc
My player was turning on only connected to a USB or charger, like yours. in fact It was hard bricked
I was able to recover it using Linux (because it is the only system able to communicate with the bricked device I had)
The problem is that everything need to be very specific, for example I used a software made for the galaxy s1 to "revive" my player 5 (both have the same hardware) it just made the device be detected via ADB. So I needed to prepare a SD with the same size as the internal storage (in this case 8gb) using the Linux terminal to mount in the SD an exactly schematic of the internal memory using a dump of another device that a xda user shared, (the dump was empty only with the bootloader, recovery etc) but it still had 8gb decompressed. So after that I used ADB to push the SD card content to the internal memory. And it get back to life \○/
Well.. it took me 1 week with a guide!! On the trial and error method. But it worked.. not perfectly, I get bootloops every time I try to flash a rom via Odin, but recovery works, and I have the device working until today

Hi, I Greatly appreciate your reply and advice. Think tho that your solution is a bit beyond my know how I know a little about ADB etc but i would have difficulties in compiling necessary files to sideload. Also many tanks for the link din't realise. Thanks Pal!

Alpha1BA said:
ok so bottom line is, I was in the middle of flashing official rom when at about 25% it failed. Don't ask why! (i still had recovery at this point) so I went ahead and cleaned absolutely everything thinking i'll just try and reflash as before. Now with power lead out it won't switch on at all and when power is supplied it shows message "An error has occured while udating the device software." loops at approx 3 sec intervals cant do anything with it.
Ive tried everything I can think of all to no avail! yes its my own fault bla bla bla just wondering if i act have f***** it.
Thanks to anyone with any ideas
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If you can get it in to download mode you can flash stock rom back on it.......refer to xda samsung tab s2 for more details on this........

thx for reply but it reboots approx every 3 seconds so I dont have enough time to do anything with it :/

Alpha1BA said:
thx for reply but it reboots approx every 3 seconds so I dont have enough time to do anything with it :/
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Plug in changer and push power and volume up and down all together and you will see the battery charger icon then you can get it in to download mode from there.....

stinka318 said:
Plug in changer and push power and volume up and down all together and you will see the battery charger icon then you can get it in to download mode from there.....
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Stinka ure a superstar (atm!) I did as you suggest to no avail but I noticed a slight increase in the time it took to start rebooting again. I do not know which buttons did this but some 20 later it lasted long enough for me to be able to flash twrp. Now i havent actually tried that as yet as i wanted to check with you first... I have the battery logo on screen, i tried recovery and it started as it should but then rebooted, now im unsure at this time whether the battery is almost dead or not so i got it on charge and have the grey battery with a white flash inside... is this what i want for now until its charged? if so i'll keep you informed thamnks more than u know if uve helped me fix this, the reason i was flashing was because when i received it (no warranty!!) the screen sometimes flickered and it would constaly end up rebboting after digging around re that im lead to believe it need a new battery and for the connecting wires to be resoldered. Anyways thanks again n as I say i'll keep this updated
Cheers
Tony

one of the probs i hab/have with this unit is that it takes approx a day to fully charge!!! when i received it the screen flickered on the odd occasion but it was rebooting much more frequently. It came with stock n not messed with previously (i new this prior to purchase so got it for right price thinking it only needed flashing, how wrong was I!!!) so I flashed and encountered the above mentioned problems! thanks to stinka I surprisingly managed to flash a recovery... now provided all goes to plan, which rom would one suggest for stability and generally hassle free and prusuming the aforementioned probs, rebooting etc are still there what could i try to stop that? other than a debloated stock I found Lineage an excellent rom but still the problems got so bad the unit became unusable and was lucky not to go out the window. Im thinking do i start with a replacement battery and check the wires etc or could this still be a software issue??

if i endevoured to do the hardware myself would I attempt it by removing screen or the base for access to battery/connector??
Thanks again

In the tab s1 the best way is removing the back cover, but for some reason tab s2 seen to be the screen... at least in this guide: https://www.ifixit.com/Guide/Samsung+Galaxy+Tab+S2+Battery+Replacement/56616
Look like alot more complex than the s1 :/

RoIlingThunder said:
In the tab s1 the best way is removing the back cover, but for some reason tab s2 seen to be the screen... at least in this guide: https://www.ifixit.com/Guide/Samsung+Galaxy+Tab+S2+Battery+Replacement/56616
Look like alot more complex than the s1 :/
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Thanks for that!!!
Tony
does look somewhat OTT!!!

will i have to odin stock first then flash rom i want or will it go straight from first flash via twrp considering there is absolutely nothing on phone at mo apart from twrp.

Alpha1BA said:
if i endevoured to do the hardware myself would I attempt it by removing screen or the base for access to battery/connector??
Thanks again
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My guess is your issue is lack of charge in the device. That's the reason for the flashing failure and the reboot loop with the firmware error.
Bang it on charge for a while then irrespective of what it's doing, whether it's looping or not, hold POWER + HOME + VOL DOWN until download mode appears.
Reflash the stock firmware with odin.

swapped battery and reflashed stock via odin. It has helped although the issues are all still there its just they happen less frequently which doesnt mean its any less frustrating.

[FIRMWARE] Help! Bootlooping on Optimizing Apps after flashing stock firmware

Hello!
I purchased a Galaxy S6 two days ago and have yet to really use it...
I wanted to have a fully fresh phone so i flashed the latest firmware available to me (USA, Sprint, sm-g920p, zerofltespr, QB1)
Everything flashed as normal (not my first S6, I'm familiar with ODIN) but upon booting up the first time it goes to a blue screen that says initializing update.. then the progress bar goes to 32% and then says erasing.. then it reboots and i get to optimizing apps (starts at some random number 8 of 33, 13of 33, 12 of 33, etc.) and then reboots and goes back to optimizing apps again... it's maddening!!!
I've tried at least 5 different firmwares, all with the same result. Always to 32% then bootloop on optimizing apps
I've tried using the PIT file for my phone along with flashing the firmwares, same result
When i try to enter recovery to wipe cache or factory reset, i get the blue screen that says initializing update then i get some yellow exclamtion warning for a second and i get to recovery... i wipe cache, reboot... same boot loop result
Back to recovery, factory reset, reboot... same boot loop result trying to optimize apps.
I've tried adb sideloading a couple different ROMS but those just bootloop at the Galaxy S6 logo splash screen.
I've run out of ideas for what to do to fix this.. every great once in awhile ill get to the welcome screen and itll get to Setting up your device for first time use... then itll just reboot and go right back to that screen... i havent been passed that once...
Please any ideas would really be great. Thanks

Saafir said:
Let the phone battery run dead. Then charge 15% and boot it. Problem will likely have fixed itself. [Not joking]
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Do what @Saafir says, it usually works.

Saafir said:
Let the phone battery run dead. Then charge 15% and boot it. Problem will likely have fixed itself. [Not joking]
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thanks so much for your response... Just got to work for my 12 hour shift... ill let it boot loop til it dies... im so curious to see if thats what will work..
thanks again!
Edit: just noticed your profile.... GO BLUE!!!!!!!!! (huge Michigan fan here) Aint that right, Koop?

blacksantron said:
thanks so much for your response... Just got to work for my 12 hour shift... ill let it boot loop til it dies... im so curious to see if thats what will work..
thanks again!
Edit: just noticed your profile.... GO BLUE!!!!!!!!! (huge Michigan fan here) Aint that right, Koop?
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If you get this going, please send me (or post here via file attach) the file: /proc/last_kmsg -- you need to be rooted to get that so hopefully you are. To get this right, you need to copy that file to /sdcard (or somewhere there) and only on the first successful boot.
I want to see what is complaining so I can (hopefully) write a fix for future sufferers that won't require the reboot til dead game.
Sent from my iPad using Tapatalk

tdhite said:
If you get this going, please send me (or post here via file attach) the file: /proc/last_kmsg -- you need to be rooted to get that so hopefully you are. To get this right, you need to copy that file to /sdcard (or somewhere there) and only on the first successful boot.
I want to see what is complaining so I can (hopefully) write a fix for future sufferers that won't require the reboot til dead game.
Sent from my iPad using Tapatalk
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Right on, unfortunately i wont be rooted since Im bootlooping right after flashing stock firmware..

I cant believe that worked!!!!!!!!!!!!!!!!
If you were anywhere near me id buy ya a beer... i swear i tried everything for two days... so many firmwares i downloaded... oh my word...
thanks so much1

blacksantron said:
I cant believe that worked!!!!!!!!!!!!!!!!
If you were anywhere near me id buy ya a beer... i swear i tried everything for two days... so many firmwares i downloaded... oh my word...
thanks so much1
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If you ever need, I try to keep the latest firmware posted here: https://forum.xda-developers.com/sp...uide-links-files-update-root-restore-t3366862

Hey guys I'm in need of some help, I've flashed my s6 sm-g920p phone about 7 times and it still won't boot up it gets to the lte screen just before startup and keeps rebooting what might be the problem ? Might it be the battery is not good ?