RP2040-PICO30-16 UF2 updates

[Tonygo]

I've just booted my new board and found it has version:
MicroPython v1.20.0 on 2023-04-26

The current standard Raspberry Pi Pico is:
MicroPython v1.22.1 on 2024-01-05

Where can I download a suitably up to date version which also supports the 16MB flash chip?

[olimex]

any version supports the 16MB flash