Need help - installation after accidental update

A friend of mine bought this MBP mid-2012, I ugraded the RAM to 8GB and everything worked fine... until two days ago when he clicked UPDATE TO TAHOE from the system settings.

I am currently trying to reinstall, actually install Sequoia since it is a supported OS but it is currently stuck on the apple logo.

Any idea how to fix that? yes, i have formatted the drive before.

The bootableUSB has been created on my MBP 2015.

submitted by /u/NotCanonAe1
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