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Re: Trying to upgrade firmware - Laserjet 4250tn

I get the memory count and the 3 lights flash but I can't complete the next step.  The error message keeps coming up.

 

Initially I tried to update the firmware from a usb cable and that's how I got the error.  I had to find an parallel port cable however when I type copy /b <rfu> lpt1 I get an error saying can't write file.  If I type it without the /b it tries to update and does a power cycle but the error still comes back. 


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