ER-A410, ER-A420 (serv.man10). ERA410 420 FAQ's (updated Dec 2006) - Sharp ECR FAQ (repair manual). Page 20

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19
How do I upgrade the
ROM`s on my ERA410/420
You can only do this by copying the
image onto a ROM Chip and fitting
this into your machine.
It is not possible to use
POSUTILITYTOOLS.exe for this
job
Back-Up/Restore Queries
Back-Up/Restore Queries
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