I need a new upgraded gateway & cannot request a new one. I MAY also need my drops inspected for melted/burned diodes in the line, unsure.

I'm here avoiding the Xfinity assistant on general principle, by necessity due to the volume of information, & for the ease of asynchronous resolution.  Long live the forums format.

As a troubleshooting step I NEED to replace my aging XB3 gateway.  I had previously accepted a gateway upgrade sometime in '23 or '24 but was unable to activate the gateway without a wifi device.  I returned it as the 'old' device.  Presently the self-service gateway upgrade system is convinced I do not need a gateway upgrade, despite continuing to offer them, & knowing exactly which model the system is detecting.

I now have a wifi device & a pressing need to eliminate the gateway as a suspect in internet connectivity issues that may be line related.  Some indicators of which are muddled with the longstanding inability of this current gateway to connect additional near-1,000 Mhz downstream channels successfully to exceed my plans old bandwidth limitation of 700-800mbps download.  Any attempts are simply overwhelmed by 'Uncorrectable Codewords', or will not lock.

As recently as December new uncorrectable codewords began appearing across all downstream channels in varying quantities exceeding 100, in the thousands & tens of thousands, in tandem with almost weekly sub 100mbps download speeds that often persist through hard power down restarts of my gateway.  Which may, or may not, briefly included a short lived indication of full speed before settling on whatever speed it can, if not already settled.  In addition, though I have no specific frame of reference, I believe SNR & power levels appear out of spec, & the 6 highest downstream channels always have large quantities of correctable codewords.  Packet loss varies from 0% when stable to almost 10% when unstable.  These above readings are after a hard restart of the gateway on 10.0.0.1, below are readings from the same time frame from cloudflare speed test.  That speed is the high end of the unstable range of speeds I'm stuck with.  Download jitter & latency ranges are also abysmal.  Way too many high ping responses, between 2-5 in the 200-300ms range on each test.  Jitter reaching 90ms during download tests. 

Prior to various unilateral upgrades & changes typically I could expect 2 cleanly locked near 1000mhz (957mhz, 963mhz) channels with very stable performance across the board.  I've just checked an with a gateway uptime of 1 hour 50 minutes, those channels have almost accumulated 2 million correctable codewords & are the only 2 downstream channels without uncorrectables, for now.  Download speed 180mbps.

My primary concern is a windstorm from spring of last year that blew a tree in our front yard into the cable lines (a mild lean) may of burned a diode at the connection to the drops.  Which from experience I know can happen quite easily with weight, in my case over a decade ago having a similar issue when icicles formed on lines at my old apartment.  Not enough weight to sever the connection, but enough to exceed stress tolerances.  That sweet spot burns & melts diodes in the line around connections where tension is formed.

My internet plan 'Blast' formerly offered up to 800mbps down but after 'upgrades' 1200mbps down was foretold.  Which I have yet to obtain, the upgrade process of which I am quite disappointed in still to this day after my last failed attempt.  A 3 square inch piece of cardboard saying "connect to the gateway with wifi to activate" is about as unintuitive as showing cavemen clay & oil & expecting them to inherently create an oil refinery with brick walls in a single calendar year.  Worse still when you connect a wired PC to the gateway only for it's network security settings to refuse to allow it to connect to the network due to gateway default settings.  Presumably due to networked TV cable boxes still connected, regardless of MOCA settings.  MOCA settings which are probably also default set to 'enabled'.  Silly me I should have followed the instructions!

Don't even get me started on the illogical AI prompt driven customer service Xfinity assistant & the removal of text messaging service for landlines via the Xfinity website associated with your move to become an MVNO.

I now desperately require a gateway upgrade,  which I believe the correct model for my plan is an XB7 but I wouldn't know.  Also, based on the provided information, if line inspection is necessary or becomes necessary down the road, please be prepared to send a qualified professional Xfinity line technician with a bucket truck to address any potential issues my troubleshooting step ends up confirming.

Something something, a meme about thanks for coming to my ted talk.