I attempted to upgrade a BlackBerry Curve to the v4.5 handheld software. Half way through it, either the software crashed or the Desktop Manager crashed and stated it had lost the connection. After that. the BlackBerry would not boot and would only show 2 blinking lights continously. Desktop Manager would not recognize the device. Obviously, the handhelf software was corrupt. I tried some instructions I found at blackberryfaq.com about using the Jl Cmder to wipe out the device, but that didn’t work for me.
Here’s what I had to do to get it going again:
1. Disconnect the BlackBerry from the computer.
2. Install the latest Desktop Manager Software and Handheld Software on your computer (if you haven’t done so already).
3. Make sure Desktop Manager is not running.
4. Go to the Command Prompt and go to: C:\Program Files\Common Files\Research In Motion\AppLoader
5. Connect the BlackBerry to the PC.
6. Enter the following command at the Command Prompt: loader.exe /nojvm
7. The Application Loader wizard will open.
8. Click Next.
9. You will see a drop-down list with the COM port and a USB entry.
10. Select the one that says: USB: UNKNOWN
If you don’t see USB: UNKNOWN or USB: BBPIN, disconnect the device from the PC, take the battery out of the BlackBerry, and put it back in. When the red light appears, reconnect the device to the PC. As soon as USB: UKNOWN appears on the screen, click Next.
11. You should be able to re-install the BlackBerry Handheld Software onto the BlackBerry at this point.
In my case, it failed the first time, and told me it lost communication with the BlackBerry. I took the battery out and put it back in. Then, I started again from Step 6, and it failed again, but it got further this time, and showed a 507 error on the handheld. I started from Step 6 a third time, and finally got it working.
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