keanw 3.55 -> rogero 4.3 oops 3.72 :(

I stupidly forgot that i had a dvd in the drive when i upgraded via the restore menu and ended up putting my ps3 on 3.72

i have one of those programmable dongles that were needed when the jailbreak first came out but i'm guessing different hardware is needed to downgrade.

am i ****ed? I was on keanw 3.55 before this calamity.

will upgrading to rogero 4.3 brick my console now?