How to make my BlackBerry Q5 support 4G?

Dear all
Hi
I just now bought a q5 under false pretense that is supports 4g. Thanku GSM arena. Now I realised that some models do but the 100-3 doesn't. That's a total bummer. But I recall that when the vendor inserted my sim it showed 4g near the networks. I came home and connected to my wifi and there was an update. So I updated and now it doesn't show wifi. So please guide me if there's any chance I can run 4g on my beloved Q5. Thanks in advance.have a great day

The Q5 does support 4G however, that support is going to be based on your carrier/supported bands and you gave zero information about that. Either way, you can't 'force' it to support 4G if it's not supported for your carrier/your Q5 doesn't have bands compatible with your carrier.