If you are having trouble with losing wireless connectivity on a DLink router, Model DIR-615 H/W version C1, here is the fix.
Go get the new firmware update 3.12NA by clicking here:
http://www.dlink.com/products/?tab=3&pid=DIR-615&rev=DIR-615_revC
- Save above file to your Desktop
- Go to the file on your desktop and rt click, then click extract all, then press enter on keyboard
- Log into router via web browser by typing in the address bar, 192.168.0.1
- Log in as Admin
- Click Wireless Settings on lft menu bar
- Click Manual Wireless Connection Setup btn at bottom of page
- Under the Wireless Network Settings div, uncheck the box Enable Auto Channel Scan
- On the Wireless Channel drop down, select Channel 6
- Choose WPA Personal, under Security Mode div
- Choose WPA2 Only, under WPA div
- Enter Pre-Shared key you will remember
- Scroll to top and click Save Settings.
- Click Interner on lft menu bar
- Set Primary DNS as 192.168.0.1 and Secondary DNS as 4.2.2.2
- Scroll to top and click Save Settings
- Click Tools on horizontal menu bar
- Click Firmware on lft menu bar
- In the Firmware Update div click browse, Click Desktop and navigate to the previously extracted folder named "dir615_revC_fw_312NA."
- Double click on the bin file inside of this folder named "DIR615C1_FW312NA.bin"
- Click Upload in the Firmware Update div. **Be patient, and make sure you are using a wired connection, not wireless.
Done - Enjoy!

