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Reference

Resource URL
MeshCore flasher https://meshcore.io/flasher
Flasher engine https://flasher.meshcore.io/
MeshCore docs https://docs.meshcore.io/
Radio presets https://docs.meshcore.io/radio_presets/
Web app https://app.meshcore.nz
Repeater / room USB config https://config.meshcore.dev
Firmware source https://github.com/meshcore-dev/MeshCore
Heltec WiFi LoRa 32 V4 Heltec product / wiki pages for the V4 board

This walkthrough

Item Value
Board Heltec WiFi LoRa 32 V4
Flasher target Heltec v4
Role Companion · Bluetooth (companionBle)
NZ preset New Zealand (Narrow) — 917.375 MHz / SF7 / BW62.5 / CR5 / path hash 2
Desk firmware Companion BLE v1.17.1
Desk BLE advert (pre-rename) MeshCore-6137C0F2
USB ID (desk) 303a:1001 Espressif USB JTAG/serial

Same Heltec v4 flasher entry also offers Companion USB, Repeater, Room Server, and KISS. Configure Repeater / Room Server via the USB config tool after flashing those roles — not covered in this Companion guide.