I have downloaded the latest V19 T10 firmware several times. Each time the installation appears complete and checksum is OK etc. When I look at the app information on the firmware on my iPhone, it will not show the latest installation. It keeps showing an older firmware V19 T5.
I'm not sure which platform you are inquiring about but typically they don't show the test version. In which case you likely have the latest updated firmware if that is what you have been uploading and may not see a change in the rev.
BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways.