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OBD2 Diagnostic Tools

launch x431

How to Add Launch X431 Storage Capacity?

12 Septembre 2021 , Rédigé par JTAC Publié dans #launch x431

 Confirmed: Launch X431 scan tool (i.e X431 V, X431 V+ etc) allow the user to expand the storage capacity from 32GB to 128GB.


Next part is about how to use TF card to extend memory in X431 V:



  1. Launch X431 V (for example)
  2. One TF card: Over 8 gigabyte (GB), with the speed of Class 10 (which is over 10 megabyte per second).
  3. One screwdriver




Simple procedure:

  1. take off the plastic protection sleeve from its backside.


  1. Remove all the screws.



  1. Set aside the back cover and take out the tablet.


  1. There is a TF card socket at the right side of the tablet where we insert the TF card.





  1. Start up the tablet.

Open “Setting” and choose “Storage”.

Click on “SD card”, here we need to set it up first, so choose “Set up”.

Choose “Used as internal storage”;

Next is “Erase and format”, it takes a few minutes in this step;

Next is to choose “Move now”, it takes a few minutes according to the data size.
















  1. Job is done. Launch X431 V successfully used TF card to extend the internal storage, and the procedure is applied to X431 V+ and any other X431 tools.




Good luck!


Launch X431 scan tool tech support: www.obdii365.com

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Launch X-431 X-PROG and X-PROG3 Differences

14 Juillet 2021 , Rédigé par JTAC Publié dans #launch x431

 The optional Launch X431 “X-PROG” or “X-PROG3” is required for compatibility when the unit is related to the immobilizer.  What’s the difference between XRPGOG and XPROG3?


Item Launch X431 X-PROG



Launch X431 X-PROG3



Read/Write EEPROM No Yes
Read/Write MCU No Yes
Mercedes Benz Keys No Yes
Key simulator No Yes
VW 4th IMMO Dump Mode All Keys Lost No Yes
Read engine in Bench mode No Yes
VW 4th IMMO enumeration all keys lost No Yes
Read gearbox data No Yes
Read and write keys Yes Yes
Read BMW engine ISN code No Yes
Replace OBD reading component Yes Yes
Read & Write BMW CAS4+ and FEM chips No Yes
Read engine in Boot mode No Yes
Read & Write Audi 5th generation steering column chips No Yes
Interface DB15 DB15,DB26
Input Power DC12V DC12V
Working current Max 200mA 500mA
Power consumption 2W 5W
Storage Temperature -20℃-70℃ -20℃-70℃
Working Temperature -10-50 0℃ 0-50℃
Size 142 x72 (mm) 228 x120 (mm)

To sum it up, X-PROG is the first generation X431 key programming adapter and X-PROG3 is the latest generation with extra chip function and more functions shown in the table above.



Both XPROG and XPROG3 are compatible with multi X431 diagnostic tablets, X431 V, V+, V Pro, Pro3, X431 Pro GT, X431 PAD III, PAD V, PAD VII.

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