MultiFlasher is a chip tuning software intended for reading/writing FLASH and EEPROM memory of ECUs. It can use any adapter supporting J2534 standard, e.g. OpenPort 2.0 by Tactrix. Before flashing and after reading the program checks the firmware and checksums, and corrects them if needed. It allows to avoid flashing incorrect dumps or to make sure that reading is correct. It contains a function of errors reading, decoding and reset with a possibility to manually add and edit their description.