Samsung phone stuck on bootloop after flashing stock ROM - Android Q&A, Help & Troubleshooting

Hey guys, yesterday I was trying to install cm11 on my Samsung Galaxy Grand Neo but it didn't work so I just decided to flash the stock ROM back through Odin but when it finished and it turned on, it got stuck in the Samsung logo... I tried wiping cache and doing a factory reset and none of it works... I also tried flashing TWRP and wiping through there and that didn't work either. It said "E: can't mount /cache" and "E: can't mount /efs". Same happened when I tried to restore a backup. I have tried flashing the stock ROM again and again and still no luck. I suspect that this might have happened because yesterday I tried to install cm11 and get TWRP to work too much times... Please help me guys... :crying::fingers-crossed:

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ATT I777 Boot Loop. Factory rest not working

Hi,
I need help!!
I have been loading custom ROM's using CWM occasionally and yesterday when I tried to flash CM9 ROM my ATT S2 got stuck at boot screen. Then I tried to do a factory reset. Doing factory reset got me stuck at "Formatting Data" and it never moved from there for 1 hr then the phone started booting again. Ever since then I am not able to boot back. I have tried all possible options - every time I try I get stuck at Formatting /data. I tried installing Siyah-v2.6.14-att vis ODIN and tried to restore from my back up. It failed saying "Error while restoring / Data!". I installed factory stock rom via ODIN still the same. I tried wiping the data using darkside super wipe it too got stuck Formatting Data and nothing happened.
Is my data corrupted? I dont know what to do. Can some one please help? Should I try re-partitioning? I am bit scared to do that.
veenaguns said:
Hi,
I need help!!
I have been loading custom ROM's using CWM occasionally and yesterday when I tried to flash CM9 ROM my ATT S2 got stuck at boot screen. Then I tried to do a factory reset. Doing factory reset got me stuck at "Formatting Data" and it never moved from there for 1 hr then the phone started booting again. Ever since then I am not able to boot back. I have tried all possible options - every time I try I get stuck at Formatting /data. I tried installing Siyah-v2.6.14-att vis ODIN and tried to restore from my back up. It failed saying "Error while restoring / Data!". I installed factory stock rom via ODIN still the same. I tried wiping the data using darkside super wipe it too got stuck Formatting Data and nothing happened.
Is my data corrupted? I dont know what to do. Can some one please help? Should I try re-partitioning? I am bit scared to do that.
Click to expand...
Click to collapse
there are chances of the data partition getting corrupted... try flashing back to stock rom...

Bootloop with a "cant mount sd card" promt.........screwed?

Tab 10.1 root/rom running 4.1.1
I just flashed a jelly bean ROM and it was working perfectly until I set up google now and rebooted. It rebooted several times and made it back to the lock screen but it became worse everytime it rebooted until it was stuck at the boot animation.
I properly backed up all my data with the latest CWM version. BUT.......when I try to restore I get a E: Cant mount /sdcard. That means no factory reset. This thing doesnt have a physical sd card either so its not as simple as going to buy another one.
Is this a hardware/driver issue? Im kinda screwed here.........thoughts?
Some days ago, I had a similar problem. After flashing mobile Odin and reboot, I got a boot loop. factory reset and restore backup doesn't work. I'll had to flash stock rom with Odin because of a bad petition on my internal storage.
so if you want to flash, try to backup all data on PC (but I don't know how to do when the tab only goes to cwm).
After flashing the stock rom, I had to do a factory reset in stock recovery. I after that, my tab works fine. now I'm back in jb 4.1.1 Rom

[Solved by Restoring Backup] bricked gt-i9100

Hello,
I was on CM10.1, I wanted to Flash Omega v23, so I have done all what INDIE said, I booted into recovery, Wipe DATA/Factory Reset, I flashed Omega but during instalation, it STOPED SUDDENLY and it said "Cannot acces to /recovery" or something like that, so I wanted to Reboot, it said Fix Root, I did it but now after rebooting, I have acces to recovery & download mode and I'm stuck into Bootsplash (Samsung Galaxy SII GT-I9100).
I tried to flash a Stock ROM via ODIN but it's stuck on cache.img
I also have a backup that I made when I was on a stock ROM.
My question is: If I restore my backup, will this solve my problem ? If not, how to solve it ?
PLEASE HELP ME !​

[Q] GALAXY ACE 5830i stuck in BOOTLOOP Tried everything PLEASE HELP!

I have samsung galaxy ace 5830i
yesterday i restarted it but i got stuck on bootloop where it repeats the samsung logo
my phone was rooted and i did increase the internal memory using link2sd and stuff.
i tried everything from factory reset to reflashing the stock rom but the boot loops is not fix.
i tried to connect it with kies to flash the original firmware but even in the download mode the kies won't recognize my device.
i even tried flashing other custom roms and then doing factory reset wiping cache files dalvik files etc but nothing is working for me
Help will really be appreciated
The same happened to me i advice you to unbrick using ODIN
Jahaifu said:
I have samsung galaxy ace 5830i
yesterday i restarted it but i got stuck on bootloop where it repeats the samsung logo
my phone was rooted and i did increase the internal memory using link2sd and stuff.
i tried everything from factory reset to reflashing the stock rom but the boot loops is not fix.
i tried to connect it with kies to flash the original firmware but even in the download mode the kies won't recognize my device.
i even tried flashing other custom roms and then doing factory reset wiping cache files dalvik files etc but nothing is working for me
Help will really be appreciated
Click to expand...
Click to collapse
if you have custom rom or stock rom coocked the kies cant help you.
do these solutions in order :
>>>solution 1 : in recovery do facotry reset and install rom , wip cache and dalvick. the first boot take time. so wait. if not worck try to format system before flashing rom.
>>>solution 2 : factory reset in recovery then install stock firemware by odin after flash is complete enter to recovery and do factory reset again. the first boot take time. so wait.
>>>solution 3 (danger, do it only if you give up if you dont have any other solution) : flash stock firmeware with odin but cheek nand erase all in odin, after flash is complete enter to recovery and do factory reset(compulsory).the first boot take time. so wait.
use latest odin version.
good luck.

Pleasee help!!! Galaxy alpha soft bricked?

hi i was running an epsil rom for my galaxy alpha g850y for a couple of months but for this rom, it seemed like the snapchat rear camera wasnt working so i decided to try reflash this epsil rom onto my alpha via twrp. i wiped cache, dalvik cache, system i think and then i tried to flash the epsil rom and it keeps failing and when i just try rebooting, its stuck on the samsung galaxy alpha logo. please help. theres no sd card slots to put in recovery or anything and i dont have any recover files (((( any help will be apreciated. also i have tried flashing stock rom via odin but it keeps stucking on file analysis. please help

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