Since you didn't specify a brand (G13 is a popular model number for keyboards from brands like Tecware, Redragon, and others), and "Rhasta II" sounds like a specific firmware version or a custom keyboard project name, I have written a versatile blog post template.
Step 3 – Launch the Updater Tool
1. A Complete UI Overhaul
4. Security Patches
Many DIY keypads use QMK firmware. Update would then involve:
Feature Spotlight: The G13 "Rhasta II" Software Profile
Pros:
Solution:
Hold the ESC key while plugging in the USB cable to force bootloader mode. Then restart the updater.