PCMTuner ‘Unable to Use Selected Interface J2534’ Solution

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Question:

What’s this message of pcmtuner? this error appeared.
‘Unable to Use Selected Interface J2534 Scanmatik -SM2 USB’

Solution:
Driver issue.
Delete and reinstall scanmatik driver
Free download PCMTuner driver

If not working,  clear everything and have a tidy place to work with just ECU and LAPTOP.
Disconnect everything. Restart laoptop. Turn on/off pcmtuner power. Restart pcm-flash.
Redo all connections SLOWLY and recheck. Then try to read.
You do not need a battery just use a power supply.