Today I tested WAN to LAN speed.
all Linksys E4200V1 firmware.
1.0.00 speed ~200
1.0.01 speed ~200
1.0.02 speed ~100
1.0.03 speed ~100
1.0.04 speed ~100
After all firmware I make Hard Reset.
With all cabals I have Speed 300 From ISP.
Something bed with router.
That do next me. how get full speed?