HOJA Controllers
Help for Hand Held Legend controllers that run HOJA firmware: GC Ultimate, ProGCC, Super Gamepad+ and others.
Configure and update them in the browser with HHL Gamepad Config: hoja.handheldlegend.com (Chrome, Edge or another Chromium browser, with a USB data cable).
Guides
HHL Gamepad Config: connect, save, back up, and what to do if it won't connect
Modes & Pairing: every mode, and pairing with a Switch, phone, PC or Wii
Update Firmware: updates, blank boards, recovery, backups, dongles and manual firmware downloads
Update the Wireless Module (ESP32): the HCI bridge firmware
Settings Guide: what each page of the app does
Controllers
ProGCC 3+ / 3.1 / 3.2 (wireless, and the wired-only 3.2) and ProGCC 3 / 3S (Wired)
What's new
The app's What's new page lists every firmware change, newest first. With a controller connected, it shows what its update brings.