Qcy Firmware Update ★

QCY does not provide downgrade tools. Unofficially, advanced users can flash old .bin files via PC tools, but this voids your warranty.

Once your device is connected to the app: Qcy Firmware Update

: If a new version is available, tap "Update." Keep the app open and your phone close to the earbuds until the progress bar reaches 100%. QCY does not provide downgrade tools

Rushing a firmware update is the #1 cause of “bricked” earbuds. Follow this checklist to avoid disaster. Qcy Firmware Update