Booting from external card was mentioned in this forum before. The uboot loader looks like it should be able to do so, there's a line for external card. Not sure if this is active by default in any way (same way you can initiate factory reset by holding power button and pressing both bottom screen corners [deleted vidme link] - you could try and see if this works for the Aura too).
My Magic Memory Upgrade Mod (external) and my WebPortal mod (FileManager, download /dev/mmcblk0) can also be used to grab an image. There are many ways to grab an image, the problem is they pretty much all involve the installation of mods and doing that is already risky on a device that can not be unbricked if anything goes wrong.
Last edited by pdurrant; 07-25-2021 at 08:35 AM.
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