Originally Posted by argedunknwon
dehash it for sure me too i neverdowngrade my ps3 but im gonna dehash it first before i install this firmware
If it has NEVER been above 3.55, no need to dehash, although might as well to be sure.
When/if you downgrade it back to 3.55 from 4.21 cfw, dehash/flag when on 4.25 dowgraded firmware before install of 3.55 Rogero 3.55 v3.7.
At least that's what i do. Haven't had any issues yet.