[Q] Special Problem All Rom's won't boot up the second time after flashing - Galaxy S 4 Q&A, Help & Troubleshooting

Dear XDA Members
I have a Galaxy s4 GT-I9505 i had an old version of Omega Rom on my galaxy and everything was workin smooth. But i decided to flash a new rom and do a factory reset and delete all data then i flashed A modifyed stockrom with TWRP it was working fine until i restarted the phone and it stuck on the galaxy s4 Boot logo so i went to recovery and flashed it again with wipe/dalvik etc. I saw in TWRM the system was unmounted so i mounted it again. and flashed the same rom again. it was booting and after i was able to us the rom again until i restarted the phone and it stuck again
I then downloaded the Google stock rom for s4 and flashed it via TWRP after i could start the rom and could use it but when i restarted the phone it was stuck again on s4 boot logo. After dath i wiped and factory reseted many times and tried 3...4 other roms but i allways had the same problem.. i also tried an original stock rom via ODIN but this wont start at all. One thing i mentioned in TWRP under Mount it allways kiks out the System mount.
I tried to fix it for 8h now and cant find a way.. so i need Your help have you got any Idea what is wrong with my galaxy ?
thanks in afford

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Virgin Mobile S4 stuck on boot Logo HELP

I'm not sure why i can't get it working but i was flashing back to stock rom. I have the correct rom and everything flashes fine on odin. I am unable to reboot to recovery. it says its loading and goes to black screen, and tries to boot to OS again. I tried flashing twrp with odin and same thing. I flashed the stock rom multiple times and it just won't boot. I even used Kies to flash it to stock rom and it was successful however stuck at boot logo again. The one thing i didnt do was wipe data/cache etc before flashing to stock rom but every tutorial i seen doesnt state to do it before the flash anyway. Has anyone ran into this problem before?
How are you able to get into download mode to flash rom but not be able to go into recovery? I had this issue once with my note 2 and went into recovery and wiped data and rebooted successfully....

S4 9505 stuck in bootloop

Hi,
Earlier today I was trying to install the 4.3 omega rom (GE), so I went into recovery and accidently wiped the data before I installed the rom. I am not sure what caused the issue my phone is just stuck on the S4 boot screen.
I tried reinstalling the previous rom (Omega 4.2.2) and it made no difference. I have TWRP recovery and I can get into recovery fine. I noticed that I cannot factory reset from TWRP and it says E/data cannot be mount, reset failed.
I am not sure what to do and how to fix my phone I tried to look for e/data issue but I cannot find much on that issue and I am noobie to this so I cannot understand some processes that are mentioned. I tried not to mess around too much after I realised its stuck.
Please help!
S4 9505
Was on Omega 4.2.2
Adams 1.6 kernel
Manthan Harsad said:
Hi,
Earlier today I was trying to install the 4.3 omega rom (GE), so I went into recovery and accidently wiped the data before I installed the rom. I am not sure what caused the issue my phone is just stuck on the S4 boot screen.
I tried reinstalling the previous rom (Omega 4.2.2) and it made no difference. I have TWRP recovery and I can get into recovery fine. I noticed that I cannot factory reset from TWRP and it says E/data cannot be mount, reset failed.
I am not sure what to do and how to fix my phone I tried to look for e/data issue but I cannot find much on that issue and I am noobie to this so I cannot understand some processes that are mentioned. I tried not to mess around too much after I realised its stuck.
Please help!
S4 9505
Was on Omega 4.2.2
Adams 1.6 kernel
Click to expand...
Click to collapse
try flashing back stock rom via odin
dannyella said:
try flashing back stock rom via odin
Click to expand...
Click to collapse
Thanks I will try that now, takes long to download the stock rom. I will report back if success.
I just did a stock firmware install through odin, now my phone is stuck on logo! Help!
Edit: I did some research and rebooted the phone on stock recovery, did a factory reset and restarted. It solved the issue and mine is back to life and working! Thank you for all your help!
Manthan Harsad said:
I just did a stock firmware install through odin, now my phone is stuck on logo! Help!
Click to expand...
Click to collapse
did it flash successfully in odin..did it say "Pass"??

Galaxy S4 i9515 Stuck in Bootloop After Flashing ROM

[Rooted][i9515] OS Problems?
I have a rooted Samsung Galaxy S4 i9515 and I tried to flash a mod in CWM. The main problem is that all my apps stopped working and the screen is black. I tried rebooting in recovery mode but is restarting and refuse to open in Recovery Mode. The only thing I can access is the Download mode, which is working fine (I hope).I did a Nandroid backup before flashing but now I can't access that neither. Anyone has an idea what happened and how to solve this?
Edit: I reflashed the stock firmware and now the phone works fine, I think the problem was a corrupted sistem file but now I lost the root access temporarily.

wiered issue with moving from cyanogenmod to stock modded rom on g900fd

hey guys ... i was running cm12.1 on my duos s5 nicly then i wanted to move back to stock so i wiped all and flashed a rom i was using before and usually works i mean tested ... all goes well until the samsung logo appears and the phone sits there ! ... i tried flashing stock boc using odin and it booted so i went back and flashed the rom again and still stucks on logo again .... im using the kernel from the stock and also the flashing script is tested before its not something new ... why is this happeing ? what can prevent the rom from booting even to animation rather than a faulty kernel ?
Have you tried wiping again after Stock flash? I have had issues before where something seems to linger with the booting if wipe is done before flash.
Yea, I'd try factory resetting, if that fails, try flashing the PIT file for that mode S5 along with the 100% stock ROM - if that boots, flash your modded stock again
Flashing back
Hi man
First of all be sure you picked the right firmware. Clear the cache and try a factory reset. Then try to flash it again using Odin's latest version. Hope you'll make it.

HELP - stuck in a bootloop and cant get out

I tried to install the 5.1.1 update
( http://forum.xda-developers.com/att...-to-update-to-g870aactive-modeloj3-5-t3247843)
and it didnt work as the bootloader it requires wouldnt flash in odin
since then i cannot boot into any roms
i am trying to get back to my stock s5 sm900f 5.0 rom
i just keep getting a boot loop of the black sansung screen and then reboots again
ive tried to flash the original stock rom and it completes but wont boot
PLEASE HELP!!!!!!!!!!!!!!!!!!!!!
please close this
ive managed to resolve it by booting into CWM, deleting cache and factory reset and then installed my stock s5 rom

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