Rak Sd Card Upgrade. Its identity is stored on the sd card, so you really should make a backup of it, in case the card goes bad (clone the sd card). The hotspot needs a minimum of 30 minutes to initialize

Prepare all this in advance. I'm going to likely upgrade to the 64gb card like rak recommended, but i just want confirmation i'm getting the right one. The sd card is ready to use with flashed firmware.