Link for app ver.4.6.0.144 for Bold
 

Hi,

I am planning to upgrade my OS ver 4.6.0.144 to 247. Will it be safer to have the original 144 version backed up, so that if something happen I can go back to the original version.

But after searching the web, it seems that version 144 is no more available. Can someone give me the link for version 144? Or do I still need it in the first place for a version that's considered outdated? Kindly advice. Thanks.

Regards.