I used xctu, connected read settings fine on Xstream pkg x09-009pkc-r. changed baudrate for application to be used for (from 2400 to 9600). got a message saying checksum fail during write. now all units 3 of them just blinking red led. won't go into config mode (yellow led holding button on pwr up). tried switches 1&2 up on power up, no change. tried restore in xctu but it says user abort..