Have you applied this yet and can you comment on if reception is improved at all? On t-mobile UK with a unbranded white Hero.
I have repackaged the HTC generic, Orange UK and T-Mobile UK ROMs in update.zip (for use with the modified recovery image) for your pleasure.
The version details and links are below, note that the files include boot and system images only, I have elected not to include recovery, radio etc. I have however posted the radio seperately.
If your device has a ROM revision not listed here, please post a nandroid backup so I can create an update.zip! Many thanks to those who have already contributed backups so far.
Generally speaking these shouldn't require a wipe, but I can't guarantee that. Also, note these are completely stock and unrooted - you'll need to root afterwards if required.
HTC Generic 1.76.405.6 - download
Orange UK 220.127.116.11 - download
T-Mobile UK 18.104.22.168 - download
63.18.55.06_6.35.04.25 - download
63.18.55.06_6.35.05.15 - download