Originally Posted by zymler
HELP please --- I have Win XP Home Edition and HTC Eris (which I love). However, I seem to have lost the ability to mount / unmount the Eris as a USB drive a few days ago. I HAVE transferred files from/to my sd card successfully, HOWEVER I can no longer do so. Regardless of whether I have USB debugging set or not, I NEVER see the "Mount USB" Notification any longer. It just "disappeared".
How can I get it back?
Does your (Win Xp) computer make any sound ("duh-dunk") when you plug the Eris in?
Does the LED on the Eris change to amber (assuming the phone is partly discharged) indicating charging from the USB cable?
Do other computers recognize the Eris? (That lets you know if the problem is your computer, the Eris... or the cable
If the answer to all three of those questions is "no", then the problem is either the Eris or the cable, not the PC.
This doesn't sound like your problem, but I'll throw it out so it doesn't cause further confusion - on my Xp machine, if I have done everything correctly, and previously dismounted the Eris, I have to disconnect the cable and re-plug it before Windows sees the Eris a second time - you can't leave the cable plugged in continuously and get it to show up a second or third time.
Here's something else to try, if you think the problem is your computer, rather than the Eris - remove the Win Xp drivers (used by the Eris), and then plug the Eris in again after you have removed all the USB drivers for the Eris only
Make sure the Eris is not
connected to the PC before you begin.
Here are the Microsoft instructions
for starting up the device manager so you can see all device drivers, even for devices which are not plugged in.
Not only do you need to set the variable "devmgr_show_nonpresent_devices" to be 1 in the environment of the "devmgmt.msc" program (as described in the above MS article), but you also need to set the toggle in the "View" pulldown menu to show hidden devices:
Depending on how you have used the phone in the past (with the PC), there will be more than one driver for the Eris installed (you will probably be surprised how many there are) The debugger driver will show up at the top of the Device Manager display, as in:
Uninstall the driver for the "My HTC" device (if it shows up).
Underneath "Disk drives" you might find one or more instances of "HTC Android Phone USB Device":
Uninstall the driver for each of these occurrences (if they are there)
Expand the list underneath "Universal Serial Bus Controllers" as shown below
This part gets a little tricky - note all the identical entries labeled only as "USB Composite Device", or "USB Mass Storage Device".
On each and every one of these you find, you need to:
- Right click -> Properties
- Click on the "Details" tab in the property sheet.
Then select the "Device Instance Id" in the Combo box (it usually is the default). What you are are looking for is something which looks like this:
You should only muck with USB drivers which have the "VID_0BB4
" identifier. When you find such entries, many (but not all) will have your handset identifier at the end (starts with HT9...).
Be careful - the objective is to only remove drivers used by the Eris - make sure that "VID_0BB4" portion of the Id string matches exactly
- you might find that there are other USB devices with Ids which are close.
Uninstall every USB driver (Composite or Mass Storage) which has that matching "VID_0BB4
" string in it - leave everything else alone.
(There should not be any need to reboot the PC, but feel free to do so at this point if you desire)
Finally, plug the Eris in to the PC - you should see lots of drivers get re-installed.
If nothing happens - then you either have a defective cable, defective connector (try a different USB port on your PC), or .... a defective Eris.