Hi! All went good, I got the green LED and the SD Card logo. I am using SX OS V3.0.4 on a FAT32 SD Card (Guiformat FAT32) I can enter the boot menu, but when I select "boot costum FW" it always boots into the original FW. I tried different SD Cards (512 and 128 GB) and exFat, I already got the full SC OS license. I'll also check the SC Card Reader connection (again). What else can I do? Would it still boot into the menu if the solder points were no good? Thanks for your support