How to upgrade legato version on red WP7702

Hi,

I built an app, but it failed to start up due to app legato version and system legato version mismatching:

root@swi-mdm9x28-wp:~# app info smsApp
smsApp
status: stopped
app.name: smsApp
app.md5: d71e32e26f4be93a003ea5c5912bb872
app.version:
legato.version: 20.04.0

root@swi-mdm9x28-wp:~# legato version
19.11.2_625c7d1acfd1ca45b2dbe189b4cb1ce7_modified

How could I fix this? Do I upgrade system legato or degrade app legato version?

You can try either method