Latest Firmware version
Old version Upgraded Guidance
DT-BDU (by ST-Link)
Preparation
Name of tool | Type | Picture |
|---|---|---|
ST-LINK | Hardware | 
|
USB cable (please buy locally, it is commonly used) | Hardware | 
|
PC or laptop | Hardware | / |
STM32 ST-LINK Utility (for chip STM32L151RC) | PC software | 
|
Latest firmware V000200 for BDU
| Firmware |
|
Instruction of update
Video instruction of update
DT821/VD (by ST-Link or SD card)
Way 1: by ST-Link
Preparation
Name of tool | Type | Picture |
|---|---|---|
ST-LINK | Hardware |
|
USB cable (please buy locally, it is commonly used) | Hardware | 
|
PC or laptop | Hardware | / |
STM32 ST-LINK Utility (for chip STM32L151RC) | PC software |
|
Latest firmware V000700 for 821/VD
| Firmware |
|
Instruction of update
Video instruction of update
Way 2: by SD card (Easier)
Preparation
Name of tool | Type | Picture |
|---|---|---|
Micro SD card (please buy locally, it is commonly used. Max 16GB will be better) | Hardware | 
|
STM32 ST-LINK Utility (for chip STM32L151RC) | PC software |
|
Latest firmware V000700 for 821/VD
| Firmware |
|
Instruction of update
/wiki/spaces/FAE/pages/1229684839
Video instruction of update
DT821/T5 (Update by USB tool)
Preparation
Name of tool | Type | Picture |
|---|---|---|
ST-LINK | Hardware |
|
USB cable (please buy locally, it is commonly used) | Hardware |
|
PC or laptop | Hardware | / |
STM32 ST-LINK Utility (for chip STM32L151RC) | PC software |
|
Latest firmware V000700 for 821/VD
| Firmware |
|
Instruction of update
Video instruction of update
DT821/M4 (Update by ST-LINK)
Please use different firmwares according to the chips
For chip STM8
If using chip STM8L051F3, the FW version should be [20200827] V000100 or below.
Now should update to [20211229] V000101.
Preparation
Name of tool | Type | Picture |
|---|---|---|
ST-LINK | Hardware |
|
USB cable (please buy locally, it is commonly used) | Hardware |
|
PC or laptop | Hardware | / |
ST Visual Programmer (for chip STM8L051F3) | PC software | 
|
Latest firmware V000101 for 821/M4
| Firmware |
|
Instruction of update
/wiki/spaces/FAE/pages/1159200771
Video instruction of update
For chip STM32
If using chip STM32G030F6, the FW version should be [20211208] V000200 or below.
Now should update to [20211229] V000201.
Preparation
Name of tool | Type | Picture |
|---|---|---|
ST-LINK | Hardware |
|
USB cable (please buy locally, it is commonly used) | Hardware |
|
PC or laptop | Hardware | / |
STM32 Cube Programmer (for chip STM32G030F6) | PC software | 
|
Latest firmware V000101 for 821/M4
| Firmware |
|
Instruction of update
Instruction of STM32G030C8 update
Video instruction of update
The Firmware in this connection are all standard version.
Please contact the sales staff for customized Version.