You need to downgrade to anything under 6.60 e.g. 6.39 OFW before updating back to 6.60 OFW before installing the CFW
I already linked the guides that includes a guide for downgrading
That is how removed 6.60 Pro C-2
then installed 6.60 Pro C with fix 3 applied
1 downgrade to 6.39 OFW
2 update back to 6.60 OFW
3 install 6.60 CFW of choice
Downgrade guide and Pro and Me guides are found at
https://www.epforums.org/showthread....43#post1583543
P.S. pops 6.60 modules folder is not needed as OFW and CFW 6.60 uses that as default that is still select-able by popsloader without the 6.60 modules folder existing