This should have been way faster: https://docs.mempool.guide/page/migrationumbrel.html But yeah....

because he's using node in a box solutions which aren't made for you to be in control of your software. switching to knots is simply replacing the qt (executable) file. start9 and umbrel are the same garbage as Core. stop trusting 3rd party services!

Just right click the other apps and select settings then choose Knots.