This is the best release for your laptop and the one that you are about to install while the rest of us live in Summer of 2022. Secondly and only way (up to my current thought) to keep (in the meantime) your PureOS Amber is to go back to deb https://repo.pureos.net/pureos/ ... and read/follow this post: Apt-key error can't apt-get update - #11 by Quarnero.
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