install BIG FAIL in iPod 6th Gen 120gb with iflash-sata V10 and 512 GB HD

[jdjg]

Hi, Im trying to install Rockbox in to my iPod 6th gen 120GB with iFlash-SATA V10 and Transcend 512GB HD, first give me and error because I have open iTunes, then close iTunes and trying again, everything looks OK in the installer in my Windows 10 PC, but when I reboot (the 2nd time) the iPod, say in the iPod: rockbox.ipod file not found, trying to install again the Rockbox, after that, cant even turn on the iPod, at the end need to erase the HD with windows Disk Management then with iTunes restore iPod....
anything Im doing wrong? or just the Rockbox do not work jet with the iflash-sata V10 and the Tanscend HD (https://www.iflash.xyz/store/iflash-sata-v10/ here the iflash that I have)

cheers and thanks in advance