Power light flashes slowly; no web interface; no DHCP lease.
Android TV (versions vary, often 7.1 or 9.0) Backlight/Power: Integrated power supply and LED driver When Do You Need the Full Firmware?
Unveiling the Power of HKTRT2861V09 Firmware Full: A Comprehensive Overview
The "full" firmware package often includes the necessary timing controller (T-CON) settings and LVDS data required to drive specific panels, such as the V500DJ6-QE1(T3).
Yes. Always reconfigure after a full firmware flash. Use the configuration backup only if you are certain the file format hasn’t changed between versions.