(adsbygoogle = window.adsbygoogle || []).push({}); So i heard that the kiosk is a jb so i donwloaded it ( Not doing any research about it ) and i ended up not liking it because now i cant play mw3 with my friends: The patch blocker inside the kiosk! So Then i tried updating it to 4.21 and all it did was update my kiosk to 4.21 Demo mode. So now i need help getting it to the OFW in order to have a useful ps3. Thanks.
Ps. I checked google,NGU, ps3 hax ect. And nothing was posted i searched for hours! please help NGU

sorry to say but i dont think there is any way to get back to 4.21 ofw untill there is a 4.21 reverter out ( reverts kiosk ps3 to ofw ps3)

Try following You must login or register to view this content.. It worked for another user.

download this mate and then install through recovery, i done it two DIFFERENT PS3's and they both got reverted the link is: You must login or register to view this content. it's the V1.1 reverter BUT works

creating a reverter is possible at ANY firmware, its not hard alls you need is PS3MFW, and get the official firmware from the sony site open it in PS3MFW, uncheck everything except "patch for installation kiosk/promo unit" then build the firmware, put it on USB install trough XMB or Recovery and you're on 4.XX OFW