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HP Designjet 800 Printer Series - Firmware Version A.02.05 cant upgrade please help

HP Recommended
Designjet 800
Microsoft Windows XP

Ive been trying to upgrade my firmware but it says I cannot upgrade it, I get a warning that the printers current firmware version must be A.02.06 or higher. The version on the printer is only A.02.05. Where do I go from here?
There is a thread that says its solved, by selecting Windows XP and selecting the firmware from there which is version 4.
My question is, can i upgrade straight from version A.02.05 to version A.04.02 ?
Its imperative I know the answer to this as I've hear people brick their designjet over updating the firmware version in leaps.

Thanks in advance.

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HP Recommended

You can instal firmware from A.02.05 to A.04.02 


But if you want to instal the latest firmware A.05.01 then you can't jump from A.02.05 to A.05.01.

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