Repurposing Helium Miner V2

Hello,

I have a Helium miner V2 (RAK7248) which is base model with the Raspberry Pi 4 (RPi 4) and the RAK2287 PiHAT.
I am trying to repurpose this powerful device to use it as a private gateway as I don’t use it for Helium mining. I’m trying to find a firmware for this purpose but can’t find any file as I’m new to RAK poroducts. Can I use WisGate OS 2 on this device? What are my options?
Anyone has done this before? I believe the answer is no, but I wonder can I by any chance use this device as a Meshtastic gateway? Any idea for repurposing this device is greatly appreciated.
Thanks