Firmware update bug
We have an xg 35 Sophos firewall at our business. I do not have a service contract with the firm that sold us the protection. I try (without any training) to monitor our system. about 2 weeks ago I installed a firmware update that crashed our whole system. I called our rep. and he said I needed to contact a tech locally, which I did. After 4 hours he fixed the firewall. My question is Who produces or releases these firmware updates.