Update Instruction-to-flash-firmware.md

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IoTThinks
2026-04-26 10:28:12 +07:00
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@@ -15,18 +15,19 @@ Heltec v2, v3, v4, WSL3, Xiao S3, Station G2, Lilygo T3 S3...
## 2. For NRF52840 based boards
RAK4631, Heltec T114, T-Echo, T-Echo Lite...
### Method 1:
### Method 1: Zip file
* To download **.zip** file
* Go to Web Flasher: [https://meshcore.io/flasher](https://meshcore.io/flasher)
* Select Custom Firmware
<img width="1024" alt="image" src="https://github.com/user-attachments/assets/c49a9672-a99d-4267-9427-219b5e41a860" />
* Click Enter DFU mode
* Do NOT erase device if you want to keep the existing configuration
* Select the downloaded zip file
* Click Flash.
<img height="384" alt="image" src="https://github.com/user-attachments/assets/de4eb8ac-e90d-44c2-91a3-2977cfecdf85" />
<img width="1024" alt="image" src="https://github.com/user-attachments/assets/65eb244f-0cf4-475e-b004-407bcd552cb2" />
### Method 2:
### Method 2: UF2 file
* To download uf2 file.
* To enter DFU mode, RAK: Press RESET twice. T-echo Lite: Press RESET, wait for 1s, then press RESET.
* To open the NRF2BOOT folder