Developer PiOS buster images

Jumpstart:

curl -L -o Makefile https://github.com/DiosDelRayo/MoneroSigner/releases/download/v0.9/Makefile
make image
DEVICE=<device path to microSD> make flash

make image will download the image parts, merge and verify the sha256 and the signature, CHECK!
make flash, will not flash, it will give you a line to flash via copy&paste...

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Or DIY:

You need to download all the split fies, either for xz or bzip2, the you merge them together like this:

cat xmrsigner-dev-buster-16gb.img.xz.* > xmrsigner-dev-buster-16gb.img.xz

or

cat xmrsigner-dev-buster-16gb.img.bz2.* > xmrsigner-dev-buster-16gb.img.bz2

then you will verify the signature, and checksums (all at once, for that you wil need signify(-openbsd on debian based systems):

signify -C -p <path/to/xmrsigner.pub> -x SHA256.sig

Your file you unpack or the file you flash needs to be OK, all other FAILED lines you can ignore, because the absence of a fie cause that it fails, too.

Unpack the file with:

xz -d xmrsigner-dev-buster-16gb.img.xz

or

bunzip2 xmrsigner-dev-buster-16gb.img.bz2

Then flash like normal:

sudo dd if=xmrsigner-dev-buster-16gb.img of=<path/to/microSD> bs=16M status=progress conv=fsync

or however you flash normal your images...