If you’re still stuck, post your , phone model , chipset , and Windows version below. I’ll help you trace the issue.
How to Fix the Miracle Box Port Error (USB / Driver / COM Port Issues) miracle box port error fix
A: Short the test point or use a “Maui META” cable to force BROM mode. Some MTK phones have anti-rollback that blocks preloader. If you’re still stuck, post your , phone