3GS + old bootrom what are my options?

[destro23]

ok i have a 3GS that i just found out has old bootrom. There is nothing in cydia for 3.1.2 and only 3.1.3 blobls that i did a few days ago.

so i'm on 3.1.3 5.12... and i just found out i'm on old bootrom

what are my options? i have jailbreaked and unlocked with spirit/cydia

but should i restore origional 3.1.3 and do it a different way?

[babyblue_pimp]

Restore with a custom 3.1.3 ipsw, then restore to a custom 4.0 ipsw