I was poking around for the v6 and ran into the v7 one and I checked the update page and this came up.
It is apparently still Jelly bean.
http://csmgdl.lgmobile.com/dn/downl...6432109876543213/LS720ZV7_05.S7_05.P25016.cab
I don't have the guts to test this out...
Link to the source...
https://www.lg.com/global/support/opensource/opensourceList?types=ALL&search=Optimus+f3
It is apparently still Jelly bean.
http://csmgdl.lgmobile.com/dn/downl...6432109876543213/LS720ZV7_05.S7_05.P25016.cab
I don't have the guts to test this out...
Link to the source...
https://www.lg.com/global/support/opensource/opensourceList?types=ALL&search=Optimus+f3