I need some help

I did find the V4 rom (latest I could find online - V3 is attached in this post). I had the V8 installed. Mine is the 32GB version.
I also got a quesiton about the USB cable to connect to the PC, I unfortunately don't have a male to male USB B handy :/ I might have to solder one, does anyone got info on this part please?
At this stage, I got the ROM, drivers (not yet installed), and flash tool from a link.
Many thanks.
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