SDXC 128GB on various Sansa players

[Gunbuster]

I tried with this adapter : http://dx.com/p/sd-to-microsd-transflash-card-converter-module-27001



It works flawlessly with most of sansa players except fuze v1.

Clip+ :



Fuze v1 :



Fuze + :



The problem with the Fuze V1 is the card is not mounted automatically at launch, I have to start the device then hot-plug the adapter which make the device crash and reboot... then the card is detected.

I tried with an old 512mb sd card and there is no problem at all, notice that the original firmware show no issue with the 128gb card.

Which mean the problem must come from the sd card controller of rockbox for AS3525, but I don't have the knowledge to resolve it by myself.