So, i followed this guide: Ultimate Fool Proof Guide: Ps3 Hardware Downgrading - PS3Hax Network - Playstation 3 Hacks and Mods
I have the e3 nor flasher (solderless) and an eclips3 dongle and went ahead with it and all looked good. I think i did wrong on the part with getting the ps3 out of service mode. I was originally stuck with "rogero 4.21" but i couldn't install qa_toggle.pkg as it didn't appear when i plugged in the stick, and i'm stuck in service mode. After some tampering i'm not stuck in what seems to be ofw 4.21 for some reason in service mode.
When plugging in the e3 flasher and trying the procedure again from scratch the ps3 just shuts off when i start the e3 flasher and don't really have any error message. Updating to 4.31 the normal way just gives a red error screen.
Summary: Stuck in 4.21 OFW and service mode and ps3 shuts of when trying to downgrade with the flasher.
Anyone got any suggestions?