Active CIOS: 202, 222, 223, 224, 236, 245, 246, 247, 248, 249, 250, 250, 251
Stub CIOS: 254
Current IOS: 58 v6176
It says here https://wiki.gbatemp.net/wiki/USB_Game_Compatibility_Table#S that it works with GX v2.3 & d2x-v8 should I change to this? and what will become of my other games too?Syscheck looks good, though you're using beta52: Colours doesn't like usb port1, check your drive is in usb port2, it's one of the very few games that won't run otherwise.
Failing that, could be a bad dump, also you're trying Sonic Colours (so PAL, rather than NTSC 'Colors') - have you set the region to one of the pal variants in usbloadergx?
you got 249 on base 57There must be a region difference for this game. Using NTSC with cIOS 249 [base 57] Sonic Colors works correctly without issues.