How to edit the /sbin/.magisk/config file to do seamless OTA with Magisk

digofr

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Jul 2, 2020
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After rooting with Magisk, users of Moto G6 are faced with the “Stock Rom does not exist” error at the Restore Images step of Magisk’s OTA Upgrade Guide. However, the following suggestion was made in the discussion following issue #1870 on Magisk’s git-page:

The backups should be kept in /data (/data/stock_boot_<hash>.img.gz)
You could probably edit /sbin/.magisk/config to point to the backup you want by putting your <hash> after SHA1=
With Solid Explorer, I found different directories called /data in Root and in Internal Memory, but only the one in Root had a ./data/ subdirectory. Is that the one to which I should download the stock rom

ALI_RETAIL_9.0_PPSS29.118-15-11-9_cid50_subsidy-DEFAULT_regulatory-DEFAULT_CFC.xml.zip

which was posted in March, before the latest OTA release? Do I extract this zip, create an img.gz file from the .xml file and rename it stock_boot_<hash> before putting it there? Is <hash> blank-notation for any name that I give it, and which I then add after the “SHA1=” in /sbin/.magisk/config?

Finally, how do I edit the config file? I was able to get to it with Solid Explorer after checking the option to show hidden files in /sbin/. However, I couldn’t send this file to my computer by sharing it through email or messaging apps, as they all denied sending it. Apparently, it’s being blocked by anti-viruses. In this case, is there a safe way to transfer it to a computer, where I’ll be able to more comfortably edit it? Alternatively, if I just omit <hash> in naming stock_boot_.img.gz, can I leave config the way it is?

Best regards!