S33 modem and on 1000Mbps plan but only seeing 250-300Mbps

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@ramj219 @XfinityRyanE 

Please circle back here and post any possible solutions for the issue here in these open forums so that all readers here may benefit from the exchange / info. This is in keeping with the spirit for which these public help forums were originally intended. Thank you.

I am unable to get speeds over 300 Mbps for some time now with my SB33 - just recently noticed lag and packets dropping in the last couple of weeks. When I first got the SB33 i was achieving 900-1GB per my plan. I read somewhere that the current firmware for the SB33 might be the issue. How can I force an update? Please help.