i have had my ps4 on 9.00 and it randomly screwed up one day and updated to 11.00 and it was jailbreaked on 9.00 is there any way i can Revert it if i was on 9.00? and if so i never did soldering .. but i would actually like to get into soldering if someone can help me figure some stuff out like what i would need to actually do it like what soldering stuff i need like the parts or what ever and the iron tool. id be interested to learn. unless theres some kind of way to revert but i have read u need to solder. to revert but im unsure so i figured id ask around and see how i can fix the revert back to 9.00