Latest Firmware version

DT-BDU Bus amplifier

All old versions could be updated to the latest

[20220111] V000200 (Chip STM32L151RC)

DT821/VD Video control module(821/AD same)

[20220111]V000700 (Chip STM32L151RC)

821/T5 5” Touch screen module

[20220124] Autowriter package or SD Upgrade package

821/M4 Mechnical push button module(M1, M2, M3 same)

[20200827] V000100 (chip STM8L051F3)

[20211229] V000101 (chip STM8L051F3)

[20211208] V000200 (chip STM32G030F6)

[20211229] V000201 (chip STM32G030F6)