(Replying to PARENT post)

Assuming you aren't able to update via a custom ROM on unsupported hardware, it should still be possible to import the new Root Cert on Android.

> System-installed certificates can be managed on the Android device in the Settings -> Security -> Certificates -> 'System'-section, whereas the user trusted certificates are manged in the 'User'-section there. When using user trusted certificates, Android will force the user of the Android device to implement additional safety measures: the use of a PIN-code, a pattern-lock or a password to unlock the device are mandatory when user-supplied certificates are used.

Source: http://wiki.cacert.org/FAQ/ImportRootCert#Android_Phones_.26...

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(Replying to PARENT post)

You need root, the first command you enter is `su`, then you immediately make the /system partition writable (you can't do this without sudo). If you can't install a rom like lineageOS you probably can't do this either

There is no way to install a system root cert (user certs will not work in pretty much any app) without root, sadly

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(Replying to PARENT post)

And I believe Google Chrome is moving to its own root certificate store, kind of like Mozilla Firefox.

https://www.ghacks.net/2020/11/02/google-chrome-will-use-its...

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