OBDSTAR released a new big TCM software update in March, 2026.
OBDSTAR TCM Software V30.87 for MB FBS3 / FBS4 TCM OBD Virginization – No Risk! Now Available for Download!
Supported tools:
OBDSTAR X300 Classic G3 with ECU flasher activation
Support Functions
- Virginization
- Personalization (Data Transfer)
- Write VIN
Function Background
When replacing a used Mercedes-Benz TCU, the internal immobilizer data must be erased before installation. Only after virginization can the unit be installed and programmed online or undergo personalization transfer by using the original diagnostic tool.
1. Drawbacks of Traditional Open-Cover & Soldering Methods:
At present, the market only allows destructive operations on FBS4 (VGS4-0-NAG2) 7-speed TCM units through cutting or soldering.
These procedures are complex and carry extremely high risk of module damage. They also require highly skilled technicians. Any operational error may result in irreversible damage and significant financial loss.
2. Advantages of the New OBD Virginization Solution:
No cutting. No soldering.
Through OBD or BENCH mode, used FBS3 (VGS2 / VGS3-NAG2) and FBS4 (VGS4-0-NAG2) TCMs can be restored to factory-original (virgin) condition. After reading the original vehicle ECU data and completing personalization, no additional online programming is required.
Install the module and start the vehicle immediately — significantly improving workshop efficiency while eliminating operational risk.
User review:
Just wanted to give you some feedback regarding a job on a Mercedes W205 that came in for a gearbox replacement. The gearbox is a VGS4-0-NAG2. I used the OBDSTAR DC706 (I renewed my subscription specifically for this job). I connected the old gearbox and was able to read it without any problems in bench mode. Then, I successfully virginized the new gearbox without any issues (3 minutes, depending on your connection). Next, I successfully transferred the immobilizer data and entered the VIN. The whole job took 10 minutes. The vehicle started and is working perfectly. I should mention that the entire process was done in bench mode with MP001.
Virgin FBS4 VGS4-0-NAG2 via OBD is the first release. Launch X431 ECU programmer will also virgin VGS4 on bench, but OBD mode is not supported.
Video demo:
