HTC Hero cannot locate service/signal. Spoke with Sprint and the account is fine and should have service. Did a factory reset and it still is not working.

SOURCE: I want Modem Driver for HTC Hero phone using

Using the HTC Hero as a USB Modem
In order to use this functionality, the HTC Sync software must be installed onto the PC first (http://blog.brightpointuk.co.uk/synchronise-htc-hero-microsoft-outlook).
The HTC Sync installer is included on the SD card that comes in the Hero sales package, or alternatively is available for download from our FTP site:
ftp://ftpaccess:[email protected]/Technical%20Support...
You can download the software to your PC, or insert the microSD card into a suitable reader to access the software.
Once installed, on the Hero device browse to Settings --> Wireless Controls and enable the option to enable Mobile Network Sharing. Now connect the Hero to the PC via the supplied USB cable. Windows will detect the new hardware automatically and install an "HTC Remote NDIS Network Adapter": Provided that your Hero has a cellular data connection, you will now be able to use that connection from your PC.

(If you found this information helpful please rate this answer with a big thumbs up and thank you for visiting Fixya!)

SOURCE: want to factory reset an unlocked htc touch cdma (vogue)

All you have to do is... hold down the (RED) End button and the (GREEN) Send button at the same time, and while still holding them down POKE your stylus in the soft reset hole at the bottom of phone.
Soft Reset button is located to the right of the mini USB charging port, assuming the phone's screen is facing you.
Confirm you want to Format and Done!
P.S. Sometimes if you don't hold the Green and Red buttons hard enough they tend to unclick and reclick if you don't apply Firm and even pressure. Also if you still have trouble make sure the phone is in the BOOTING cycle when you attempt this.

SOURCE: locked HTC Hero ESN on sprint; need to rewrite ESN

download this and unlock ur phone http://rapidshare.com/files/168472642/HTC_unlock.rar

SOURCE: have a Sprint HTC HERO cant pull up picture mail,

this is currently a known issue with the device it will be fixed with the realese of 2.1 in a few weeks, a work around is to go to sprint.com/picturemail then log in and veiw and or save or download your pictures from there untill the official fix comes out

SOURCE: HTC Hero ringer/speakerphone doesnt work

check settings... check buzzer device... check contact of buzzer device to buzzer interface...