(adsbygoogle = window.adsbygoogle || []).push({}); on 4.25 firmware?

No you cannot, you can downgrade if your model is lower than a 3K, purchase a progskeet or an E3 Flasher and downgrade, if your stuck like I am with a 3K model than you could purchase a 3.55 ps3 off ebay or other sites and use that or data transfer if your goin hardcore online. cheers brahh

alright thanks bro !!!

Nope, You can downgrade.