Sounds like you have a corruption in the original ISO or on your card.
-
Did you check the SHA1 of your download? It should be
b8592b047640b87ee03f957a8afa120e660f5be7
forManjaro-ARM-xfce-pbpro-20.10.img.xz
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Did you check your SD card for errors on another machine?
smartctl --all /dev/XdY
where
X
andY
are the designated disk letters of your card on that machine (Generally/dev/sdd
or/dev/sde
)
P.S. I’ve also reclassified your question into the ARM category so some people better than me can have a look too.