BRING YOUR OWN BOARD · FREE TRIAL

Flash Krok

Chrome or Edge on a computer with a USB-C data cable. Safari and Firefox cannot access the serial port. Every feature works in the trial with one map sheet — see Manual §03.

Download mode if no port appears: hold BOOT, click RST, release BOOT.
Click Install, pick the USB port, confirm. First time: choose Erase. Do not unplug (~2 minutes).
Press RST once if the board does not reboot. Optionally configure Wi-Fi via Improv on this page.

Install firmware

Manifest: https://geo.gokrok.com/fw/stable/latest/manifest.json

Queue first map sheets (optional)

Or download on the device over Wi-Fi (Manual §06). Browse the Maps grid for cell names.

South edge (degrees, e.g. 37.5) West edge (degrees, e.g. 122.5)

Serial log appears here.

NEXT STEP

Unlock all maps

Trial keeps one sheet. A $30 licence removes the limit for this board — buy the key first if you have not, then bind it with your Hardware ID.

Unlock maps → Specifications

Installing Krok does not change who makes or certifies the LilyGo board. Offline binaries live in Manual §12.