Like few other people from this forum I got ps3 with 3.55 CFW.
I bought mine with 3.55 ofw and just updated it to cfw and it was like that few years now.
I use it only for games and watching video via PS3MS.
I dont know any game that wouldn't work with MM, 3.55 and fix's. I readed when roger cfw was out that you dont need to DEX your console anymore and dont need to fix eboots with 4.30 roger, and you can use official updated for games.
Are there any other advantages from updating to higher fw? I dont own any flashers to go back to 3.55 if it will be necessary in future. And I didn't find any info in Q&A and FAQ here. Theres always choice between 3.55 and 4.30
Thanks for help