1. Our hardware support all J2534 protocol software. 2. dont need register and active device. you can work it directly . and more pay attention to protecting personal privacy. 3. when you update your device by mistake. it will not be locked. you just come back to correct driver version to work. 4. support newest cars and do online programming (with online account).for example GDS software work with 2021 year for GM Buick ENVISION, 2021 year for CADILLAC XT5. we have tested online programming and working perfect!!! 5. Note:Due to different production batches, the actual product is not labeled, and there may be slight differences in the product, which does not affect normal use. Functions: 1. Read and write ECU data 2. ECU clone 3. ECU parameter adjustment 4. ECU maintenance engineering 5. Chip turing 6. Read ECU maps 7. Checksum correction 8. Stage1-3, gearbox tuning etc.. 9. Read flash and ep files 10. Powertrain adjustment 11. Support online update 12. VR files supply 13. Pinout comewith 14. Helpdesk and tuner account 15. OBD2 reading 16. Cover-free wielding-free no disassembly data reading, greatly reduce the risk of destroying the ECU, bench mode. For SM2 PRO 1.20 Supports 67 Modules to open protocols:Activate Licenses 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,29,30,31,32,33,34,35,36,38,40,42,43,45,46,47,48,50,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74 Above total 67 modules, support thousands of car brands, read and write ECU and GearBox,power upgrade tool,clone ECU to read and write.Best chip tuning tools! For SM2 PRO J2534 VCI Pcm ECU Programmer Dongle 67 IN 1 ECU read & write v1.4 FLASH EEPROM FLASH BENCH OBD For SM2 PRO hardware version:V2.21.21 Plug Type:US Plug, it