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Identify the board

Confirm USB and that you are flashing Heltec V4 (this walkthrough). If your board is V4 R8, stop — see the comparison on Overview.

On the board

Silkscreen / packaging should read plain V4 (for example HTIT-WB32LAF V4.3). V4 R8 / V4-R8 means a different flasher target.

After the board is on USB:

esptool --chip esp32s3 --port /dev/ttyACM0 chip-id
Features: … Embedded PSRAM 2MB …

2MB PSRAM → plain V4 → flasher Heltec V4. 8MB → Overview R8 row.

This desk board reported 2MB.

In the flasher

Open flasher.meshtastic.org and select Heltec V4.

Heltec V4 selected with firmware 2.7.26 — this desk board’s target

Next: Bootloader mode.