update old circuitpython 7.0 board libraries

Hi,
I need to update the libraries to the latest version available for circuitpython 7.3.1
As I have not the full source code (the device is mine but is executing some code not developed by me in an mpy library) I wanted to update the libraries without updating circuitpython version.
Is still possible to use 7mpy format? can I use an old version of circup?

No files, tests, or entry points are identified. Start by checking CircuitPython 7.3.1, the mpy format, and circup release compatibility; done means providing a supported, evidence-based answer about updating libraries without changing the CircuitPython version.

Written by the indexing model from the issue text.