Reply to "Upgrading an old TIU"

RJROGR Forum Member

TheTIU firmware and the remote firmware are upgraded separately. When doing the TIU, you'll have the stereo cable connecting 2 ports on the TIU and the remote will not be connected. For the remote, REMOVE THE STEREO CABLE and connect TIU and remote with the telephone handset cable.

The Loader software and excellent on-screen step-by-step instructions. Follow them to the letter. If a process fails, unpower TIU, then repower and start from scratch

2/25/213:32 PM

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