An issue was discovered on One2Track 2019-12-08 devices. Any SIM card used with the device cannot have a PIN configured. If a PIN is configured, the device simply produces a "Remove PIN and restart!" message, and cannot be used. This makes it easier for an attacker to use the SIM card by stealing the device.
c354352413f8666ba1eec42b7fabff8e3f67cfd24cf5d6949f74962a76b6e758