Single-slot adapter for PSP working with 256GB Micro SD card

This 256GB Sandisk card is formatted on PSP with a new UCEC dual-slot adapter I recently purchased on its Amazon store. But PSP won't read it with this dual-slot adapter after the formatting. But when I took out this Micro SD card and inserted it into an old single-slot adapter, it works perfectly fine on PSP.

[@Jrodsly]

I managed to get this working myself. Found a tutorial on the PSP Subreddit and it was simple after that. I wonder what kind of storage limit would be possible on these PSPs. FAT32's theoretical limit is 2TB, but I doubt that is the limit the PSP can actually read.

[@tort5715]

Much better than official sony memory cart for psp or vita

[@blueapple1728]

Unfortunately not working for me, it's said no memory card inserted, is that anything to fix it?

[@silvatape]

The PSP's Achilles foot. Resolved

[@Marius87r]

Could you show how you made 240 GB?
I have a 2xMicroSD Adapter And I have two 128 GB cards

[@DjadjaVova]

А шо именно не понятно? Форматировать в FAT32