Hello all. I have a couple of questions regarding a PSP Slim (hackable)... Currently it is running CFW 5.50GEN-D3 permanent, but I would like to change it to 6.20PRO-B6 or 6.20TN-E fix (temporary hack). Which one would you advice the best? What is the best way to do it? Install OFW 6.20 and then run directly one of these 2? No problem in installing OFW over CFW? Thanks in advance.