Wait for the "Success" message before disconnecting. Troubleshooting Common Issues
Finding the exact firmware for the RK3128 MXQ EP 68 motherboard is notoriously difficult because "MXQ" is a generic brand name used by many different manufacturers, each with unique board revisions. Using the wrong firmware can permanently brick your device. LibreELEC Forum Available Firmware Resources Direct Download Link : A specific firmware file for the RK3128 MXQ EP 68 has been archived on Google Drive Firmware Repositories Rk3128 Mxq Ep 68 Firmware
Needed to press the hidden recovery button inside the AV port. Wait for the "Success" message before disconnecting
Post your PCB photo and the text from dmesg (if you can access ADB) in the comments below. Rk3128 Mxq Ep 68 Firmware