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SAMSUG S20 ULTRA AFTER I CHANGED THE ROM! PLS HELP!

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claudiu1990

New member
Oct 17, 2021
2
0
I have one problem with one s20 ultra 5g ... after firmware uptade from 10 to 11 ...

I bought the phone from a pawn shop and I had a custom firmware installed
I couldn't install many applications and that's why I wanted an original firmware
at phone status I get custom
now I have official android 11 but no signal 🤣
is my network blocked? or? I can enter the pin code ... but it doesn't take a signal ...
MODEL NAME SM-G988B/DS
BEFORE CHANGE SM-G988B only. meybe here is the problem ??


someone said it was a roted phone after seeing the phone in download mode
I don't know what that means and how it can be fixed !
Another thing I noticed ... on the back of my phone is written live demo unit not for sale
only now I saw this .... after 3 months from buying the phone
 

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Last edited:

butchieboy

Senior Member
Feb 15, 2012
9,027
5,036
springfield.il
What carrier sim are you using. Big risk buying from pawn shop, you never know what you are getting. Since demo unit it could have been a stolen phone. So many good re-sale options other than pawn shop.