(adsbygoogle = window.adsbygoogle || []).push({}); I Have A Psp thats on 5.50 GEN-D3... How would i update it to 6.35 PRO-B2?? Or Should i just stay on 5.50 GEN-D3??

I would stay on 5.50 GEN-D3 but is up to you to upgrade to 6.35 PRO-B you need to Fully restart psp so its on OFW and then update 6.35 and then download 6.35 PRO-B CFW

do i need a pandora Battery to upgrade From OFW 6.35 To 3.56 PRO-B2??

Nope. You can sign code now, so no need. The PSP thinks the CFW is OFW I believe.