cxmb for 5.50 prome-4

is there any available cxmb for 5.50 prome-4

or can i use 5.50 gen d-3 cxmbs..? :)

D3 will work

ohh yeah..thanks man.. :)

anything that works on D3 will work on prom 4 as it was just a patch to play games that needed a higher firmware to play

gee..thanks..

one more thing:
is any 5.50 cfw will work too?
such as 5.50 A-B-C-D?

thanks in advance

Hello, not to highjack this thread but wonder if 5.50 Prome-2 (what I have) is the older version of Prome-4? Thinking of updating to 6.60ME-1.6, or should I just stick with my current FW? I am out of PSP scene for little over a year, so please excuse my lack of updated knowledge; appreciated any help. Thank you very much!

thanks man..................