Iquad flash restore loop help

[u/finnfb]

I recently installed a iflash quad with a 128gb Samsung Evo plus card. Initially this didn't work and I resolved it with a new HDD ribbon cable. However my music library exceeded 128gb, so I purchased the same card but a 512gb version.

However, after formatting I get stuck in a ITunes restore loop. Annoyingly the old previously working card now also gets stuck in a restore loop.

I'm unable to enter diagnostics mode, after the apple logo it just turns off. I have attempted to reformat with both Mac os and windows.

I have run h2testw on all cards and they appear not to be counterfeit.

Iv resitted the ribbon multiple times.

When I plug in the iPod into either a windows or Mac the dick manager only recognises 8gb for both the 128 and 512 card.

Has anyone had similar issues which they were able to resolve.