Batteries do not update in version 3.4.

They do update in version 3.2 in the assistant software. FYI.

Yes, seems to be a bug within setup software 3.4, at least for the Windows version. Shame on DJI, don't they do beta-testing?
I uninstalled 3.2 prior to installing 3.4 and wondered about the missing battery update until I've found the hint for 3.2 in a forum.
Also a hint should be given to normal users that they have to repeat the update process for every battery they have.

Within the 3.4 update tab not even the firmware field gets displayed for the battery, telling either "no update" or update available".

Regards, Gerd

NOTE PHANTOM 2 owners

V3.08 will NOT update your smart batt using assistant 3.4
To update your batt you must use assistant 3.2 AND use this assistant to update EACH of your smart batts.
The latest batt firmware is 2.6.0.0 When you run assistant 3.4 afterwards it will then show your batt on the latest firmware