My (tr)uSDX suddenly stopped working

[ah6cy]

My Hi-Band (tr)uSDX, built from a kit, was working just fine until it suddenly stopped working.
It takes a few times of plugging and unplugging the power code to turn it on. When it turns on, the OLED screen shows this:

",,04A47494B120C
Reset settings.."

I tried to reset it by holding "E" button down to power on to no avail. It does not respond to pressing any button. Any suggestion/idea would be appreciated.

Hiroki AH6CY

[DL2MAN]

This is part of your Serial Number.
Please re-install Bootloader and firmware. Something seems to be corrupted with your rigs memory.

73 Manuel; DL2MAN