APAC device maybe?
Your watch is probably an APAC version. APAC versions receive software updates with a significant delay, so you have to be patient.
Do you possibly have an APAC (Asia-Pacific) version of the 245? The APAC version is typically behind on updates.
Yours must be an APAC version. The latest firmware for the APAC version is sadly 5.70 - which is 5.50 + Pulse Ox enabled in Japan 
Oh - if it is an APAC device does that mean it cannot be updated with current firmware?
The firmware doesnt specify APAC or ROW
APAC version still 5.0, no update to 5.20 and 5.30 from Garmin Connect and Garmin Express, Now 5.40 release? Please update APAC version Garmin-Brooks
