KATANA-AIR, KATANA-AIR EX: "COMMUNICATION ERROR" appears when switching effects

This error indicates an unstable Bluetooth connection between BTS for KATANA-AIR and the unit. Re-pair the devices using the following steps.

1. Close BTS for KATANA-AIR.
2. Turn the KATANA-AIR / KATANA-AIR EX off, then on again.
3. On your mobile device, turn Bluetooth on.
   If "KATANA-AIR MIDI" appears in the device list, do not tap it.
4. Start BTS for KATANA-AIR.
5. Tap [CONNECT] on the screen.
6. If "Bluetooth Pairing Request" appears, tap "Pair".
   The editor screen appears when the connection is established.

For connection instructions, see "Connecting the BOSS TONE STUDIO iOS App to the KATANA-AIR Unit" or "Connecting the BOSS TONE STUDIO Android App to the KATANA-AIR Unit": https://www.boss.info/global/support/by_product/katana-air/owners_manuals/

If "COMMUNICATION ERROR" appears while connecting to BTS for KATANA-AIR, see "KATANA-AIR, KATANA-AIR EX: "COMMUNICATION ERROR" appears while connecting to BTS for KATANA-AIR".