Most of the files linked below are now considered irrelevant now that the majority of these PCBs have been added to QMK. I highly recommend utilizing config.qmk.fm and QMK toolbox to program these boards.
Also the following PCBs are supported by VIA, an app used to configure your keymap on the fly: Prime_E, Prime_L, Prime_L V2 and Prime_M. You can find the compatible firmware and the application at caniusevia.com
Prime_E @ TheVan Keyboards Configurator (configurable indicator LEDs :D )
***The Prime_O uses an ATMEGA32U2 MCU. Be sure to target the correct MCU when flashing firmware***
***The Prime_M uses an ATMEGA32U2 MCU. Be sure to target the correct MCU when flashing firmware***
Prime_L_Teensy V3 (Final)