Bosch diagnostic dongle.

This is a workshop tool, this is not something anyone can use to hack their speed restriction. If you do not work on bikes in a professional manner, this is not for you.

Working perfectly. Obviously you need the correct software from bosch, which is only accessible via a dealer login code. So if you don't have one, your options are limited, but also this is maybe not for you.

The dongle just allows access to the software, without it it locks the screen with an insert dongle box.

Can be used for diagnostics, can be used for updating firmware of software for batteries motors and display units.

Can also be used to upload map information for appropriate hardware.  It can fine tune wheel circumference sizes to give accurate speed displays- and maybe give you a slight increase in speed but won't be able to trick the system or install other country software.

There are easier ways to make your bike faster - this is not for that purpose. This is for repair and maintenance.

I no longer deal with bosch systems so is surplus to requirements.

These don't come along on the open market very often.