Claro que sirve, te dejo esto, si quieres imprimelo asi no lo pierdes..

Para:
DB2020 CID52/53
DB2012 CID52
PNX5230 CID52/53

Marcas en settings:
-Signed mode
-Enable alternative security bypass
Y aprietas unlock/Repair.....Seguis las instrucciones


Para:
DB2020 CID49/51
DB2012 CID50/51
PNX5230 CID49/51

Marcas en settings:
-Signed mode
-Enable alternative security bypass
-Enable preloader security bypass
Y aprietas unlock/Repair.....