I've found this page in psp-hacks.com :

http://psp.dashhacks.com/file/2101

its about downloading and installing cfw:
"PSP CFW 6.39 PRO-B7"

it says there the following instruction:
"You must be running PSP Official Firmware (OFW) 6.39 prior to installing/using this."

but, if I have OFW I will not be able to run homebrew anymore,
which I assume also includes that when I have OFW I will not be able to run CFW upgrades, right?
So why is that requested?

Am I requested there to find a glitch in the OFC to allow me to exploit it by myself before installing the CFW?
what am I missing here?


I am very scared of losing the CFW abilities I already have on my
PSP-1000, version 5.00 M33-6.

the first time I installed CFW I used a pandora battery which I do not have anymore with me so I do not want to do things which I can not fix.