Galaxy S3 SGH-T999 Stuck in BOOT RECOVERY MODE

[DataratN2]

Can anyone help me with this issue please? I have tried everything, especially the button method to try and get it into download or recovery mode, but they don't work! This happened when I was trying to Odin my phone back to stock when I got that QHSUSB_DLOAD message on my PC. I got it out of brick mode, but now it is stuck in boot recovery mode!