Cannot connect to phone after upgrading the firm ware

Question

I am developing on Windows 7 platform using my HTC HERO.

The original firmware is 1.5. I've heard that 2.2 is new and is faster than 1.5, so I updated the firmware to 2.2. (There are quiet a few concepts here, like SPL, Recovery, ROM, Radio) I think I only upgraded ROM.

The phone works fine. However, my windows 7 cannot find the device anymore. Also adb devices cannot find the device either.

(I didn't backup my old ROM, and I've tried to flash a few 2.2 ROMs available online, none of them could be found by Windows 7.)

Can anyone give me some hint on solving this problem. Thanks a lot.

UPDATE:

I try to find the official ROM. E.g. http://www.htc.com/uk/SupportViewNews.aspx?dl_id=671&news_id=254. But when I input my SN number, it says that this update does not work for my phone. It seems that there are a lot of HEROs there and I don't know which HERO is my phone.

In Windows 7, the system can find the device, but says that cannot install the driver correctly.

When I press BACK + Power Off key, I can enter recover mode and Windows can connects to the phone correctly. And also adb devices displays:

D:\android\android-sdk-windows-old\tools>adb devices
List of devices attached
HT9BJL904379    recovery

USB VID:

Finally I am done! Thanks for @Chris Stratton's hint! I use the solution here:

http://alt236.blogspot.com/2010/09/adb-will-not-detect-phone-after-rom.html

Answer 1

If you installed an unofficial rom, perhaps it changes the usb VID/PID meaning you need a new driver. You should ask the authors of your unofficial rom which driver to use for that rom on windows 7. If you were using an OEM driver, perhaps you now need the vanilla SDK one.

Also look in the device manager (or boot from a linux CD or something) and see if plugging in the phone results in an additional unknown USB device showing up.

Ideally you'd use another computer with a more user-friendly operating system to verify that the phone's usb interface is working after the upgrade - it's also possibly that something isn't right with your unofficial upgrade and you don't in fact have a working USB/ADB interface on the phone right now.

Did you re-enable USB debugging in the settings menu after the upgrade?