understand bootloop at the start of the phone - Galaxy A3, A5, A7, A8, A9 Q&A, Help & Troubleshoot

Hello everyone,
please i need help to understand and solve a bootloop problem when the device is turned on.
I have a samsung A5 2016 SM-A510F on which I installed the ROM AOKP android 8.1. Rom Aokp works very well but I can not change ROM anymore.
I have TWRP recovery and odin on the pc. when i flash the rom or even samsung firmware i have a bootloop at boot time when the logo is displayed. on the other hand when I put my backup with aokp everything works.
thank you for your expertise

It's looking strange flash original rom from SAMMOBILE via ODIN only...

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HELP !!!!!!! please

Ok so i made the mistake of installing Cyanmode CM13 on my S5 without Gapps and now i get the language screen on boot up with 'unfortunately, setup wizard has stopped', i cannot boot into recovery via power/volume either.
What are me options ????
please help.
Flash TWRP again with ODIN
or Flash stock ROM with ODIN and start fresh
Which model S5?

Need help for the t237p

I want full stock software flashable via recovery philz because accodently deleted some files
And i need boot.img for kitkat and lollipop
I tried flashing stock deodexed 4.4 rooted rom it flashed properly but it stucks on boot logo and restarts continously and i tried flashing a gamer ultimate rom for t237p its wifi isnt working but booting properly and also tried flashing lollipop 5.1.1 stock debloated rom and it doenst go after showing galaxy tab 4
I really need your help
I am a needy person please help me :laugh: :laugh:
look for your firmware model on this website
https://www.sammobile.com/firmwares/
then download it and install it using odin

back to the official firmware impossible. 2016 A5 boot problem

Hello,
first of all thank you to those who will take time.
I have a A5 2016 sm a510f. I installed the ROM OAKP 8.1.
I wanted to return to a samsung firmware for reasons that will occupy another post.
my problem is that the boot stops at the samsung logo and it runs in a loop. it must be a bootloop I think ...
I flashed the firmware with odin and I add twrp.
I may have to add magisk?
I previously installed the Google product rom. when I turn on the phone the google logo is still displayed before the samsung logo despite a complete wipe with twrp.
there would not be an interference?
Thank you for your help. cordially

could not do normal boot

So i was going to install a custom ROM on my g530h via twrp, and im new to this
I downloaded the file that the app asked me to, and acidentally flashes It as a boot, not as a recovery, now the phone just stays in the download mode, and I cant install the stock ROM with Odin, It gives me a different setor every time
Please help
What file did you actually install like what model was it exactly for ?
Post some screenshots of odin.
try watchin this.. i also have the same problem this week but i find the ways to fix it just flash the stock firmware of g530h xcu using odin so i use the xcu phil firmware which is 4.4.2 and it works.. just flash the stock firmware.. hope it helps...
Do you have any other method because when I rooted the divice I deleted some system files then lost USB connection with pc I tried may way to make it back like downloading the driver from Samsung nothing work and tried different stock rooms and custom ones all of them had the error 7 or md5 file not found by the the same thing happened with the os I made the boot to recovery by accident and lost the system .
Hi buddy
I am in a huge problem a friend gave me his sm-g530h duos to upgrade it's firmware to 5.0.2 i downloade one from sammobile & flashed it but it stuck on logo & not booting to recovery only download mode.then i tried to flash many other lollipop roms but every odin said fail.please help

Stuck on logo bootloop with no ability to flash TWRP nor downgrading

Hello guys,
here I am on the Galaxy S8 bootloop caused by flashing following firmware using Odin 3.14:
G950FXXSBDUA3 FIRMWARE.
After that I got bootloop on Samsung Galaxy S8 logo. I can't downgrade to previous version, as Samsung blocks that and I can't flash TWRP neither (when trying to do so I get "Only official released binaries are allowed to be flashed (RECOVERY)" ; I've forgotten to tick "OEM Unlocking").
So now I'm stuck at the moment where I don't really know what to do. Have I bricked it completely or is there any way to recover?
Thanks in advance for answering.
Cheers.
UPDATE: I just solved the problem. The solution was to flash the stock ROM again, but this time with the .pit file and tick the Nand erase and Re-Partition. After that it booted normally. Hope this will help some fellows with similar problem.

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