From nookDevs

Part of the NookColor portal

ADHOC Wifi Support for Nook Color (stock)! (NOT FROYO)

NOTE: There appears to be an issue reconnecting when wifi sleeps and comes back on. While the community is researching a permanent fix, in the meantime go to settings -> Wireless and toggle wifi off/on to correct it if you lose connection.

This fix will allow you to connect to ADHOC wireless networks ( such as to a laptop or with wifi-tether on an android phone )

Like most other fixes, this requires your nook to be rooted and usb adb working, please follow the guides for those steps first!:

Rooting: NookColor Rooting USB-ADB: NookColor USB ADB

HOWTO enable ADHOC tethering:

1. Download and unzip the wpa Supplicant fix file below, this should give you a wpa_supplicant-adhocfix file
2. *DISABLE WIFI ON YOUR NC*
3. Make a backup of your current wpa_supplicant:

   • adb pull /system/bin/wpa_supplicant  wpa_supplicant.backup

4. Remount the /system partition RW:

   • adb shell mount -o remount,rw /dev/block/mmcblk0p5 /system

5. Push the new wpa_supplicant:

   • adb push wpa_supplicant.adhocfix /system/bin/wpa_supplicant

6. Fix permissions:

   • adb shell chmod 755 /system/bin/wpa_supplicant

7. Remount the /system partition RO:

   • adb shell mount -o remount,ro /dev/block/mmcblk0p5 /system

8. Enable WIFI on your NC, you should now be able to see ADHOC networks in the list! ( they'll be displayed with a (*) prefix )

Credit where credit's due, this was taken from a wpa_supplicant IBSS patch I found via a Google search, if anyone knows the party responsible, let me know so I can credit them properly! http://szym.net/android/

This is compiled against TI's Omapedia Eclair sources ( http://omappedia.org ) - since this is a different framework than the B&N stock build, I can't guarantee this will work, won't brick your device, etc. Use at your own risk!

NOTE: The information on this page is correct, but there is more information (NookColor_Enable_Adhoc_Networking) on how to set up your nook to either be switchable from adhoc to infrastructure or how to use a profile setting program to toggle wifi off when your screen is off and back on when you turn the screen on, thus eliminating the problem mentioned above.