Portland Tool & Die, Inc. BTC-4149-R2 - 2/11/2019 This release includes the following elements: BTC-4149 instrument firmware version 4.2 PtdCsrFw version 11.2 BTC-4149 command line interface(btc4149.exe) version 1.1 BTC-4149 windows installer v2 USB virtual communications port driver, version 1.0