Also came back after a few weeks and bricked mine. Wish I'd read the forums first I guess I'd hoped the issues with the Omega2+ would be over and done with after ~4 months of grappling with it. I clearly guessed wrong =/
I figured "fine, I'll recover it back to an old firmware." Or maybe not. I have an "EXP DOCK" with pinout silk for the original Omega, but noticed the USB pins are the same. But for love nor money I can't get the Omega2+ to see any USB mass storage device. I've tried 5-6 separate devices now from microSD cards in readers, to USB thumb drives, but... nada.
Just attempt after attempt resulting in:
Scanning bus for storage devices... ================================================= 1: Hub, USB Revision 0.2 - u-boot EHCI Host Controller - Class: Hub - PacketSize: 64 Configurations: 1 - Vendor: 0x0000 Product 0x0000 Version 0.1 USB_STORAGE: 0 Storage Device(s) found No USB Storage found. No F/W upgrade from USB Storage will be attempted.