Now that 6.39 TN-A HEN has been released, I have a few questions:

1) I have 6.20 and I use TN HEN for it. Should I upgrade to 6.39 so I can gain the advantages of the latest firmware update while being able to enjoy homebrew or should I just stick with 6.20?

2) I have had some problems with my PSP (for example, homebrew not loading properly, UMDs not working properly) and I feared it may have been from a bad flash. Will upgrading to 6.39 fix that?