(adsbygoogle = window.adsbygoogle || []).push({}); Long story short my cousin updated my 3.55 PS3 (Feelsbadman).

Will I be able to downgrade from that? As I now have two x 4.30.

Yes you can with the E3 flasher

You must login or register to view this content. is a thorough tutorial created by LFC, I take no credit just directing you towards it. If you don't want to read, then you can search on youtube how to downgrade using E3 flasher. There is no other method downgrading except for this one. It requires you to open your PS3 console, and I highly suggest if you're not good with this stuff then don't do it because it voids the warranty, and you can brick your console.

don't do the same mistake than me do a shit load of back up and if it doesn't work the led flash its the clip need to press more on the nor or nand (e3 flasher tips)

Will there ever be a simple downgrade or simple jailbreak again?

At the moment the ps3 scene has been heating up, there are devs that are working on it, or probably have a cfw for v4.30. Just stick around and wait for things to roll up. There are a couple of members on this site updating us on the news circulating around the ps3. Nothing has been released except for a couple of facts. So no there is no simple method to downgrade, unless you can find a legit and trustworthy person who offer these services.