COX won't update customer provided modems after screwing up Gigablast speeds....

OpenBSD you don't have the update it's 8600-18.2.9

just a customer with the M860 on the latest cox approved firmware

Actually it wasn't the tech who said this.  It was the support center office who he was on the phone with the entire time.  I asked to speak directly to the phone tech because I didn't believe it either.  The onsite tech reluctantly allowed me to speak to him and the home office tech specifically stated that customer bought modems will not be updated by COX and its up to the customer to update their firmware.  As far as I know that's not even possible and I thought it was pretty crappy considering it was COX's system updates that screwed up my Gigablast speeds! 

Hopefully Motorola will talk some sense into COX engineering and they will push the update to my modem and that will fix my recent slow speeds.  I am also currently on the older Software Version 8600-6.1.1.19 

All I know is that if this truly is COX's official policy to screw anyone not using their equipment then I think I will finally have to leave them for someone else after being with them for 20 years when they were @Home!!

OpenBSD have you done a recent speedtest?  I'm curious to see if your speeds have degraded like mine have.  

I've been intermittently taking speed tests and seeing if things have changed, as I'm sure you have as well.  I also checked my router settings, and for some reason I had dynamic QoS on which may have been affecting my speed tests, because when I turned it off and then tested again this morning (unfortunately, before I had tested today, so I am unsure if it actually had an effect), I was up to between 400-500Mbps, and when I just tested now I got up to 535Mbps.  So, either it's a gradual improvement, or perhaps some other fluctuation.

Steelbender you should try a speed test without your router. Connect a computer using a cat cable directly to your cable modem and eliminate your router all together for testing purposes. There might be another router setting that is still affecting your speeds Report back.

I was thinking about that, but I have been lazy. ;)  But yeah, I do realize that would be the best test.  It's just odd because I haven't changed any other settings that I could think of that would affect speeds like this.

You can easily determine if there is a router or Cox issue with what I suggested. Eliminate your router from the equation.That's actually the main troubleshooting suggestion that Cox suggests so one can rule out that it's not a router issue. Until you do this test, I don't think you can really blame Cox. Afterwards, when you do the test and find out a direct connection to the modem doesn't help, then blame Cox ;'). Be interesting what you find out.

Well, as much as I hate to admit it, I did test up to ~950 Mbps when bypassing the router.  Lovely. -_-  Now to find out why the router is suddenly throttling the bandwidth.

seper8tor What router do you use? I have a Netgear Nighthawk.

Edit:  As an addendum, turning off the Traffic Monitor function in the router settings has improved speeds by a couple hundred Mbps (!!!), but it's still ~700 instead of ~950 that I got with the one test w/o the router.

Edit2:  After disabling IPv6 again, speeds are a smidgeon above 900 Mbps now.  I do not understand why the darn router has a bandwidth loss with it enabled - quite annoying.  But at any rate, thank you openbsd for your nudge to connect directly for the testing.  As I had mentioned, I know that is always the best test, but I guess I just didn't realize the traffic monitor setting throttles it so much. (And it's also annoying that the router also has such a noticeable issue with IPv6 as well -_-)

I wonder if you pay for Cox Customer Care which is $10.00 a month that they've been pushing if your internet bandwidth will miraculously go up. Seems to fix Cox email problems.

I do have the same issued, Cox never fix my problem, i'm been with cox almost ten years, this year is very bad services? they're send the technicians to my home, the guy just replace slitter and he left he's say it's good to go. I told him you has to look inside my modem MB8600 see error, but he keep say it should be good now, but after he left the issue are the same? Then called motorola, they're swap my modem and are the same issue? also most my friends with cox has the same issued?