(adsbygoogle = window.adsbygoogle || []).push({}); Hey I use to host challenge lobbys a long time ago and i want to start again .. I have the newest update on my ps3
so can somebody show me how to downgrade my PS3 to a 3.55 Version and start hosting challenge lobbies on all call of duty's.

To downgrade - Buy a downgrade service from eBay/Ps3hacks/psxscene or buy an e3 flasher or progskeet (£60-100) and downgrade, e3 and prog are hardware flashers which you currently need to downgrade.