Database Users

[Q] Special Problem All Rom's won't boot up the second time after flashing

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

Phone randomly died

I have an S4 i9505, never rooted or flashed any custom roms. Running the latest OS version from Samsung.
Phone was on the desk while I was working, suddenly it vibrated and turned off.
Now it's stuck in a boot loop, sometimes gets stuck on the Samsung logo.
Tried booting to recovery, worked on my 3rd attempt. Wiped cache, booted past the logo into the carrier logo and the SAMSUNG logo and then went back in the loop.
I have not installed any harfmul apps, I don't want to do a factory wipe yet because of precious data on the device.
Is there anything more I can try?

Download a stock ROM for your device from sammobile.com and install it using Odin. Since Odin doesn't wipe data when it installs, your data should be safe. With luck, the reinstall will correct your bootloop.

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

Stuck on Samsung logo after flashing stock ROM

I have a faulty Galaxy S5 (G900M). One day I was using it normally and suddenly it rebooted and wouldn't boot to the stock ROM anymore, being stuck at the boot logo. I then decided to install CyanogenMOD and it worked. Now I want to sell the phone, so I want to revert it to stock ROM, but flashing a stock firmware gives me the same error as before.
What can be the issue?

First boot can take as long as 15 minutes. Did you allow such a length of time? IF so, pull battery, boot in recovery, wipe cache and dalvik cache, boot system and try

[Q] How to Factory reset / boot into stock recovery

I was on CM7 for sometime, but got into problems and thought about "restarting" the device.
So i flashed Argentinian 2.3.6 stock (4.5.2).
However I forgot to Wipe data and now it seems I'm in bootoop.
However I cannot boot into stock recovery. Using Power+R+M till M logo boots the OS and if I keep the button pushed for longer, it just... boot Android... however it takes longer to move from M logo to M bootanimation.
Any idea?
I know it's abandoned forum, but maybe there is someone here?
PS. Flashed it already few times.
Is there any other way to Wipe? ADB or Fastboot?