steps
what you'll need: NANLINK app via Bluetooth (OTA) or USB flash drive
1Bluetooth OTA: 1. Install NANLINK app. 2. Enable Bluetooth. 3. Connect to Evoke 600C. 4. Navigate to Device - Firmware Update. 5. Follow in-app prompts.
2USB: 1. Download firmware zip. 2. Copy .bin to root of FAT/FAT32 USB drive. 3. Power off. 4. Insert USB. 5. Power on.
GotchaWC-EXT wired controller (product id=76) has separate firmware (V1.02.05) that must also be updated for full compatibility. GotchaCRMX Linking Key functionality added in V1.02.11.