forums ---> https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=316744


Linksys EA8500
DD-WRT v3.0-r37010M kongat (09/21/18)
Linux 4.9.128 #183 SMP PREEMPT Fri Sep 21 08:40:38 CEST 2018 armv7l

So far this seems to be the best k4.9 firmware :-)