Router: Linksys E4200 V1
Firmware: dd-wrt.v24-30016_NEWD-2_K2.6_mega-nv60k.bin
kernel: Linux e4200a 2.6.24.111 #30044 Fri Jun 24 07:50:19 CEST 2016 mips DD-WRT
Reset: yes, 30/30/30 before install,plus reset
Errors: nil so far
Installed K2.6 and K3.1 for comparison of QoS bandwidth limiting of guest wifi VAP. Interestingly limiting works on K3.1 but not K2.6 with same settings. I suspect this has been a problem for a while as QoS limiting doesn't work in r29739 K2.6 either.