I just read your first post again. Are you using IR straight from the TSU7000? If so there are many available solutions that will make your system 99% reliable.

The iPhone and global cache may work but they will not give you smooth operation like you are used to with the pronto. You would do better to get a new pronto and extender. Or take a look at URC or RTI

[Link: pronto.philips.com]

[Link: universalremote.com]

[Link: rticorp.com]

Prontos can be bought for less than MSRP online and the programming software is freely available.

URC remotes, when purchased from a dealer can come with software if the dealer chooses to give it to you. If the dealer refuses ask the next one and then the next one until you get the software.

RTI is a dealer only product that does not come with software.