Question Help Bought samsung a12, tried to root it and stuck at boot screen - Samsung Galaxy A12

My phone hardware id:
A127FXXU5AVC5​I tried to root my phone using custom rom from xda, ended up stuck at boot screen, tried to install stock rom (default rom) and now i'm stuck at "SetupConnection",
anyone please help, this phone is only my last favorite phone, any help would be appreciated

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[Completed] Need ROM for G900X

So i bought a ldu of the Galaxy S5 and i wanted to change the ROM for it but none of the ROM's worked for me and the phone can't boot up, it's stuck on the Samsung logo. Phone has Write Protection enabled.
None of the PIT files i found worked. Now I'm stuck with a bricked G900F and I'm trying to find the original Demo ROM but i couldn't find one. Phone has twrp installed on it but still can't install custom ROM on it because it won't boot up.
TheMati117 said:
So i bought a ldu of the Galaxy S5 and i wanted to change the ROM for it but none of the ROM's worked for me and the phone can't boot up, it's stuck on the Samsung logo. Phone has Write Protection enabled.
None of the PIT files i found worked. Now I'm stuck with a bricked G900F and I'm trying to find the original Demo ROM but i couldn't find one. Phone has twrp installed on it but still can't install custom ROM on it because it won't boot up.
Click to expand...
Click to collapse
Greetings and welcome to assist. There is very little information on the live demo units, I did find a couple of threads on it
https://forum.xda-developers.com/showthread.php?t=2758140
https://forum.xda-developers.com/showthread.php?t=2724575
If you can boot into recovery using the 3 button combo it looks like you can install a cm rom
Good Luck
Sawdoctor

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This is my only phone and I can not acquire another one, please help me

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