Help Altitude Config

Just swapped my APM2 for an APM2.5 - all reload and fine apart from the Altitude. I've re-loaded firmware several times and re-loaded config, Even re-done config from scratch but I still get this...

My Apm2.0 reports 73cm and that is accurate why does the 2.5 show -21474836.00 ?


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    I save the parameters into a file, erased the Eprom - 3 times to be sure, re-loaded the parameters. Problem gone - Yipee.

    Just a note, loading a PARAM file does not restore all parameters. For example the battery monitoring config seems to be ignored.

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