Well since this outdated thread is being dredged up and dragged through the mud, for all those masses who are going to fixate on out of date info it's important to fill in what might be pertinent points:
-- Doing online searches for older, dated devices will most likely result in XDA references anyway
-- If the suggestion implies using a custom ROM, not mentioning that this probably requires rooting the device is a disservice. Also, depending on the device model, for a lot of dated models the ROMs, custom or stock, will not be current either.
-- Sites like sammobile are using stock Samsung ROMs, obtained from either Samsung or the carriers themselves, so the ROMs it has stored in its download servers are the same as the ones that would be applied by OTA upgrades. There are not going to be 'special' stock ROMs that contain newer Android versions.