If prompted for a password, common defaults for tech archives are 1234 , mhhauto , or the name of the website where you found the link. 3. Usage Guide (For OBD2 Firmware 103)
If you get a "Checksum Error," the download was likely interrupted. Try downloading the file again using a download manager . 103.rar
If the file is just named "103" without ".rar," manually rename it by adding .rar to the end so your software recognizes it. If prompted for a password, common defaults for
Copy your existing firmware folder within your diagnostic software directory (usually in C:\Program Files (x86)\... ). If prompted for a password
Before opening "103.rar," it is critical to know what it is for, as generic filenames like this are common in niche tech circles: