In your last upgrade  1.6.2.10, in the "OSMO Release Notes of 2016-03-24" I find only two Majior Updates.
In the version 1.5.2.0 of 2016-03-17 there were "19 Major updates".  In the downloads page the version 1.5.2.0 is no more available.
I didn't make the upgrade to the version 1.5.2.0 so, if I make the upgrade to version 1.6.2.10 I'll have all the updates of the previous version or only the last 2?
Thanks in advance
Enzo

Yeah, that´s DJI´s Changelog

Relax, it comes with the Features which where 1.5.x.x included

Mike

Hello!
The latest firmware version v 1.6.2.10 is the later version of v1.5.2.0, which has fixed two issues just as stated in the release note based on the version v1.5.2.0, so v1.6.2.10 has all the features which are included in v1.5.2.0.