I've got into the habit of rebooting any AP or SM before attempting an update. IIRC, the package is uploaded and extracted into a ramdisk, and there's a good chance that memory is low if it's been running for months. I've seen this countless times on SMs. I updated a couple 1k GPS and 2k's last week without a problem. Reboot, then update both software banks and finally update the GPS firmware. You can open another tab/window and watch the system log to see the GPS update in 5% increments. It takes quite a while to reflash the GPS since it's like 4800 baud serial. I didn't time it, but it seemed longer than the 3 minutes that Cambium says it takes.

On 1/30/2018 9:11 AM, RickG wrote:
Yes. I contacted them and that's exactly what they are going to do. Thanks!

On Tue, Jan 30, 2018 at 9:48 AM, Kerry Penland <kpenl...@bigtube.net <mailto:kpenl...@bigtube.net>> wrote:

    We had one ePMP 2000 AP fail like this on the GPS upgrade. We
    called cambium support, they were able to login with their
    engineering login
    and restore GPS operation for us.


    On Fri, 26 Jan 2018 20:12:07 -0500, RickG <rgunder...@gmail.com
    <mailto:rgunder...@gmail.com>> wrote:

        Correct. This is NOT a puck problem. The satellites were
        coming is strong BEFORE the firmware upgrade. I tried
        downgrading today but that did not help either. See the
        attached pics. Looks like RMA time.

        On Fri, Jan 26, 2018 at 3:36 PM, Josh Luthman
        <j...@imaginenetworksllc.com
        <mailto:j...@imaginenetworksllc.com>> wrote:

            No satellites doesn't sound like poor signal to me.

            Josh Luthman
            Office: 937-552-2340
            Direct: 937-552-2343
            1100 Wayne St
            Suite 1337
            Troy, OH 45373

            On Jan 26, 2018 3:28 PM, "Kristian Hoffmann"
            <kh...@fire2wire.com <mailto:kh...@fire2wire.com>> wrote:

                We fought with losing GPS sync on ePMP APs at a couple
                of sites.  We had been told to point the pucks south
                to get the best GPS signal.  There were several wild
                goose chases, as it seemed upgrading/downgrading
                firmware fixed it, but only sometimes.  In the end,
                the solution at each of these sites was to point the
                GPS puck straight up.  Our best guess was that there
                was something overloading the GPS receiver in the
                direction we had them pointed.  So pointing them up,
                while not giving them the best signal, minimized
                terrestrial interference. At least that's our theory.

                -Kristian


                On 01/26/2018 07:39 AM, RickG wrote:
                Well, I did check the forums and found I'm not the
                only one. I'm going to try downgrading. Was hoping to
                find someone here who has gone through it so I dont
                waste time if it needs to be RMA'd :)

                On Fri, Jan 26, 2018 at 10:27 AM, Ray Savich via
                Cambium-users <cambium-users@wispa.org
                <mailto:cambium-users@wispa.org>> wrote:

                    Have you contacted our support folks or the
                    Cambium Community?

                    supp...@cambiumnetworks.com
                    <mailto:supp...@cambiumnetworks.com>

                    http://community.cambiumnetworks.com/
                    <http://community.cambiumnetworks.com/>

                    Join the Conversation

                    Cambium Networks Community Forum
                    <http://community.cambiumnetworks.com/>

                    *From:*cambium-users-boun...@wispa.org
                    <mailto:cambium-users-boun...@wispa.org>
                    [mailto:cambium-users-boun...@wispa.org
                    <mailto:cambium-users-boun...@wispa.org>] *On
                    Behalf Of *RickG
                    *Sent:* Friday, January 26, 2018 9:20 AM
                    *To:* Cambium Networks User Group
                    <cambium-users@wispa.org
                    <mailto:cambium-users@wispa.org>>
                    *Subject:* [Cambium-users] ePMP 2000 GPS not
                    working after firmware upgrade

                    It worked before, upgraded from 3.5.1, no more :(


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-- -RickG


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