Flasher that allows identification, reading and writing of ECU internal flash memory for various purposes. It works via CAN bus or K-line data interfaces using an J2534 Pass-thru adapter. The package consists of a protection USB dongle and software with a set of plug-ins — software modules. The existing modular system allows to get access to needed software functions without excessive cost. The program has a client-server architecture and needs to be connected to the Internet. Activation of additional modules is also possible in the automatic mode via the Internet.