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Hi, I used the commands, but when try to install the updated package, I get this message. Doesn't seem to work with macOS Sequoia 15.0.1. Thank you for your help.
It looks like Apple made a change in the OS check

"<script>
function InstallationCheck(prefix) {
if (system.compareVersions(system.version.ProductVersion, '15.0') &gt; 0) {
my.result.message = system.localizedStringWithFormat('ERROR_25CBFE41C7', '15.0');
my.result.type = 'Fatal';
return false;
}
return true;
}
</script>"

causing it to fail the check. If you change the command "sed -i '' 's/12.0/13.0/' ~/Downloads/hp-expand/Distribution" to "sed -i '' 's/15.0/16.0/' ~/Downloads/hp-expand/Distribution" It should pass the OS check HOWEVER I'm not sure if what it's installing will work properly or cause issues with Sequoia. Proceed with caution.

I still have my ancient HP LaserJet 4000 still working that this thread saved in 2021 but haven't needed to resort to trying to reinstall the old drives as I used a Time Machine transfer to my current Mac from the one I had when I used this last.
 
It looks like Apple made a change in the OS check

"<script>
function InstallationCheck(prefix) {
if (system.compareVersions(system.version.ProductVersion, '15.0') &gt; 0) {
my.result.message = system.localizedStringWithFormat('ERROR_25CBFE41C7', '15.0');
my.result.type = 'Fatal';
return false;
}
return true;
}
</script>"

causing it to fail the check. If you change the command "sed -i '' 's/12.0/13.0/' ~/Downloads/hp-expand/Distribution" to "sed -i '' 's/15.0/16.0/' ~/Downloads/hp-expand/Distribution" It should pass the OS check HOWEVER I'm not sure if what it's installing will work properly or cause issues with Sequoia. Proceed with caution.

I still have my ancient HP LaserJet 4000 still working that this thread saved in 2021 but haven't needed to resort to trying to reinstall the old drives as I used a Time Machine transfer to my current Mac from the one I had when I used this last.
Unfortunately it didn't work. I'm not a command line guy - tried to paste it in terminal, but got an error message "...
Marian-Marticek ~ % "sed -i '' 's/15.0/16.0/' ~/Downloads/hp-expand/Distribution"

zsh: no such file or directory: sed -i '' 's/15.0/16.0/' ~/Downloads/hp-expand/Distribution
Thank you for your help anyway. I'll try to somehow copy the drivers for work printer HP LJ 1022 from my old intel MacBook Air.
 
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