how do i update my MacBook pro mid 2012?

argenis162 wrote:

how do i update my MacBook pro mid 2012???????

Software here—older macOS installer backups on this server:

https://support.apple.com/en-gb/HT211683

verify you are using the Safari browser to download/initiate the macOS links.

hardware here—

Apple Mac Upgrades - RAM, SSD Flash, External Drives and ...

A 2012 MBP can run no higher macOS than 10.15 Catalina. It is available in the link that Leroy provides.