Quote:
Originally Posted by Radian
The serial numbers you asked for from #4~#6 are: ---4 22-- ---- ----
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The sequence "422" does not appear in any S/N prefix in the wiki page
https://wiki.mobileread.com/wiki/Kindle_Serial_Numbers
so it looks like no one has reported it and code that depends on S/N doesn't know how to handle it. That could explain the problems. I've never heard of the JB working but not MRPI, but that doesn't mean anything.