Voltcraft VC-890 by UNI-T Firmware

[goaty]

Anyone got firmware for the EFM32 on a Voltcraft VC-890 made by UNI-T ?

Unfortunately the chip is read-protected (I tried reading back using  ESP-PROG and OpenOCD).

One I/O-pin is dead because the meter is not switching into one mode when turning the knob.

Have already replacement MCU, but no software...

Unfortunately UNI-T is not responding, and Conrad has no firmware.

[goaty]

Unfortunately there is no way getting the firmware, so the meter goes into the bin.
I´d really wish we had right to repair by now...