As dc/dc stated, this is an old device. However, you may be able to save it. Download the OS for your device and install it to your PC.
You could follow these steps:
How do I upgrade the OS on my BlackBerry? - BlackBerryFAQ
If it still doesn't detect your device, then follow these steps.
What to do next if Jl Cmder will not connect and wipe - BlackBerryFAQ
Be patient and good luck.