(adsbygoogle = window.adsbygoogle || []).push({}); im on Rebug 4.75.3 DEX. i hope 3.55 DEX.
I am uncertain about which one to choose.

1. REBUG 3.55.4 999 Downgreader
2. 3.55 DEX Downgreader

and another question.
What's the difference between "REBUG 3.55.4 999 Downgreader" and "REBUG 3.55.4 REX"?

thanks advice and sorry my english.

Either one will probably work (otherwise it will just throw an error), but the 3.55 DEX downgrader You must login or register to view this content. should work if nothing else does.

Rebug downgrader is most likely more so for CEX

use the DEX downgrader if on dex, the rebug 999 downgrader is fror cex, and the 3.55.4 is fr CEX ps3 to be installed after downgrading if you get an error while changing tot other fw