CADDX Protos Ascent H Sky Firmware Flash Guide

• This guide shows how to flash the  firmware for the CADDX Protos Ascent H Sky VTX via Type‑C.

What you need

• CADDX Protos
• Data Type‑C cable (charge-only cable will not work)
•  PC (Windows / Mac)
• Official firmware package (includes flashing tool +file)

Steps

• 1. Connect Protos to your PC with Type‑C. Press the data transfer button on the tail of Protos.
• 2. Unzip the firmware package and install the matching Caddx PC Tool.
• 3. Launch the tool, click Connect Device.
• 4. Select Ascent H Sky, choose the  firmware file.
• 5. Click Flash Firmware. Wait until the process finishes.
• 6. Verify the firmware version after reboot.

Important Notes

•  Do NOT disconnect USB or power off during flashing, risk of bricking.
• Make sure you pick the correct Sky (VTX) firmware, do not mix with VRX/goggle firmware.
• Download firmware only from the official CADDXFPV website.

 Timeline reference

•  Cable connection & enter flash mode
•  Install flashing software
•  Select firmware and start flashing