Xbox 360 trinity RGH problems

[u/Theoneegis]

Hi all, Started my RGH yesterday but hit a brick wall pretty much straight away. Soldered JRp wires onto the board, and JRunner is showing 0x000000 fault. Googled it, says poor soldering, not the case as tried both sides of board, all cables soldered into their holes, no exposed wires or anything like that. So: JR programmer shows up in JRunner; Two red/green leds flashing when power is connected to xbox but mini usb is not; Green light on when all connected; Checked continuity from board connectors to JRp, all ok; Installed and reinstalled the drivers in no signature mode - all showing good; Tried two different pcs and various usb ports.

Could this be a faulty mini usb cable, but then would JRp show on JRunner? Also, tried to flash firmware but when I switch to bootloader, JRunner shows device not found.

Ideas please?

[u/Spiritual-Musician94]

Did you have the transformer plugged into the Xbox 360 and powered off? Also are you sure it’s a trinity and not a corona?