I didn't know your console belonged to the female gender : then you will have to modify it (her?) even more gently and sweetly....So she gets everything she needs installed.
https://darthsternie.net/psp-firmwares/where can I get the 6.61 original firmware?
that is the golden firmware, so no.I also have a PS VIta PCH 1001 which I modded with HENkaku on system 3.60 a 2-3 years ago, is there any updates I should consider?
Correct. CIPL Flasher and Infinity alter the IPL. You can only choose one, as they are not compatible with each other. The official Infinity was made for the PSPs that couldn't use CIPL.I'm pretty sure CIPL_Flasher fucked up my cfw installs as when installing infinity, all cfw gave black screen on boot, then power off. I had to use the chronus switcher to remove all traces of cfw and go back to ofw 6.60. now, cfw runs correctly and I can quadruple boot.