XAIRCRAFT FC1212-P - Manual (Page 32)

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2. Stop at step 4 until it counting down to ZERO.
Reason: probably your USB port can’t provide enough power for all devices which get the power from the
upgrading device.
Solution:
1. If you use a PC, use the USB port on the back of the case.
2. Disconnect all wiring form the module being upgraded.
Quick Setup Guide
Install FC1212-P and other modules on the frame well, suggest following the steps below to set up. And uninstall