I currently have 4.5 175 OS . It runs okay, but time to time it seems to run sluggish. I have not downloaded any apps or game. i mostly check emails and go on the web. Is the 4.6 Or even 5.0 OS release for the Curve 8330 if not will it be available for this device?
I also have a 8330 and upgraded to a hybrid OS 220.127.116.118 and my phone runs great. If you delete all the core & 3rd party apps that you don't want or need, such as language support for languages you don't even speak, BB Maps (since they don't work on a Verizon BB 8330), VAD, etc., you can save a ton of memory. Also, you can install the default ringtones to your memory card and delete them off your phone. I used the hybrid OS from the Nanthanix website. Once you go hybrid, you will never go back. Hope this helps breath new life into your old 8330.