OBDSTAR released an important Toyota/Lexus software update for vehicles with gateway reading smart key ECU IMMO data by OBD (world first released, no need any adapters).
Here is an example on read immo data and generate simulator key on Toyota Camry 2018 8A-A9 proximity via OBD.
Step 1: Read Immo Data
Connect x300 dp plus with vehicle via OBD main cable
Go to Car immo->Asia- >Toyota Lexus ->Latest Toyota software-> Manual select vehicle->Toyota-> Select region USA/Canada ->Camry ->Proximity-> 2018 onwards-> Read Immo data-> By OBD
Read immo data via OBD successfully. Save data.
Step 2: Generate simulator key
Then select Make simulated card
Select the immo data in step 1
Select generate simulator by Key SIM
Connect Key SIM with x300 dp plus
The generated simulator key will start car. Then you can perform Step 3: Add smart key. Add key or all keys lost via the immo data.
The procedure is pretty straightforward. Just follow the instructions.