New Version: 2015.0427

[Tim Wessman]

If you are on a USB3 port:

Work-Arounds
A. Try a different USB port
a. Cancel the firmware upgrade process in the HP Connectivity Kit.
b. Unplug the calculator from the problem USB port.
c. Reset (using the hole on the back of the HP Prime Calculator).
d. Plug the calculator into a different USB port on the PC.
e. Check to make sure the calculator appears in the HP Connectivity Kit window.
f. Using the HP Connectivity Kit as before, attempt to upgrade firmware.
HINT: try ports on USB 2.0 hubs, even if connected under a USB 3.0 Root Device.

B. Force the re-detection of the calculator (You will need administrative privileges)
a. Leave the HP Connectivity Kit waiting/hung in the firmware update process.
b. Leave the HP Prime Calculator in recovery mode. Do not reset it.
c. Go into the device manager and “uninstall” the USB devices that show up in an error state (denoted by a yellow or red warning sign). It will look something like this:

d. Click “Scan for new hardware” under the “Action” menu
e. Observe that the HP Connectivity Kit should stop waiting and start the firmware upgrade process once the OS declares the device ready for use.


NOTE: This Prime firmware update will fix this issue. You may have to perform this work- around as you are updating this time, but not again after that.