Welcome to the "no gateway reply" club I submitted a loads of messages for this problem with my E90
And no worked so far like
1-changed the router setting, disabled any security, and added the E90 MAC address to the router and all did not work
2- I defined new access point did not work
3- I changed the advance setting on the E90 to disable the power saving
4- I also lowered the RST as advised to 2304 and did not work
5- I changed the channel on the router
If u received any new suggestions, please help