[Q] Update HTC Wildfire S v2.3.5

Hello I wasn't exactly sure where to post this thread so mods if this is the wrong section feel free to move it :good:

My aunt has a HTC Wildfire S v2.3.5 and I wanted to install the Viber app on it but that requires v2.3.6 or higher.

I can't officially update the phone, latest update was v2.3.5 so what are my options at this point? Are there any stable custom roms for the Wildfire S?