If you do have a contract, your options are limited to:

If your upgrade goes sideways and you end up at the switch: prompt, don’t panic. You can still recover your switch via transfer through the console port, though be prepared for a long wait—it’s slow!.

Downloading firmware or software for networking devices from unofficial or third-party sources can pose significant risks, including:

No legitimate Cisco IOS image will ever be available via “exclusive” file-sharing links. Protect your network, your hardware, and your legal standing by obtaining the firmware directly from Cisco — even if that means buying a support contract or accepting that your 2950 belongs in a museum (it was EOL since 2012), not on a production network.

Once the file is on your flash, tell the switch to use it: boot system flash:c2950-i6k2l2q4-mz.121-22.EA14.bin . Save and Reload: Run write memory and then reload . Pro-Tip: Recovery Mode