what you'll need: Bluetooth via LiteSync+ app (iOS App Store id1576623809 / Android via email request to Intellytech). No USB firmware port on LC-120 2.0.
1Install LiteSync+ app (iOS App Store id1576623809; Android, email customerservice@intellytechusa.com for APK link).
2Power on the LC-120 control box and confirm CH is set to 1 or higher.
3On the control box, navigate to Menu 3 (Bluetooth) and rotate knob to BT_RESET → YES to make unit discoverable.
4In LiteSync+ app, tap the '+' symbol (top-right) and select the matching 4-digit Bluetooth ID shown on the control box display.
5If a firmware update is available, the app will prompt during connection, follow in-app instructions.
6No standalone firmware file download was found; update delivery is entirely through the LiteSync+ app.
GotchaNo firmware version numbers have ever been publicly posted by Intellytech for any LiteCloth 2.0 model.
GotchaLiteSync+ app (iOS) last updated v3.8.1 on 2023-08-05, app appears unmaintained since Intellytech reportedly closed in 2025.
GotchaAndroid users required email request for APK, that email address (customerservice@intellytechusa.com) is unreachable while site is down.
Gotchaintellytechusa.com is currently offline (Cloudflare error 1001).