If you have a Nook Color device and followed my first two articles about rooting and enabling side loading apps and enabling Android Market on the Nook Color, and, if you are like me and need everything working properly, there is one thing left to convert Nook Color in something exquisite…Enabling it to tether to your smartphone – an iPhone 4 in my case.
Let’s start with a little bit of background: AT&T won’t let you tether easily so this is one of the main reason to jailbreak your iPhone. Once you jailbroken it, there is a very useful application called MyWi, currently at version 4.0. MyWi enables an Ad-hoc connection and a PC can connect and tether through it absolutely fine. The problem is that by default, Android devices can’t connect to Ad-hoc networks, they require only infrastructure networks that neither iPhone app can provide, MyWi included. The next best thing would be to enable somehow Nook Color to see and connect to Ad Hoc networks.
Somewhere in the many threads from XDA developers lies the answer. Member cicada gets the credit (and my thanks) for the following instructions:
0. Ensure you are running Windows ;). The steps described should work with other operating systems as well, with minor changes but I only tested under Windows.
1. Be sure that your Nook Color is rooted (see this article for instructions).
2. Download and extract wpa_supplicant-ncadhoc inside your Android SDK\Tools folder. Replace Android SDK with the actual folder where Android SDK is installed. If this sounds weird to you, read the original Nook Color rooting article.
3. Disable WiFi on your device
4. Download the original wpa_supplicant from the Nook Color using the following command. The file will be downloaded inside Android SDK\Tools folder. Move it in a safe location.
Open a command line window and navigate to Android SDK\Tools folder (or wherever you have ADB.EXE file) and execute the following command.
adb pull /system/bin/wpa_supplicant wpa_supplicant.backup
5. Copy the new wpa_suplicant file you downloaded called wpa_supplicant.adhocfix in the Android SDK\Tools folder.
6. Execute the following commands one by one in the command window (you’ll basically copy the new wpa_suplicant file back on the device.
adb shell mount -o remount,rw /dev/block/mmcblk0p5 /system
adb push wpa_supplicant.adhocfix /system/bin/wpa_supplicant
adb shell chmod 755 /system/bin/wpa_supplicant
adb shell mount -o remount,ro /dev/block/mmcblk0p5 /system
7. Re-enable WiFi on your device
8. Now yourdevice will see Ad Hoc networks and display them preceded by ‘*’ (star).
Following these instructions I was able to successfully tether my Nook Color to my iPhone 4 running MyWi 4.0.
Note: There is a bug in the new wpa_supplicant file that kills the connection whenever your Nook Color gets locked / in sleep mode. To fix the issue, disable and re-enable the WiFi connection on the Nook Color every time you need to use the MyWi connection and you are good to go.
A quick way to add a little button on the home page to quickly enable / disable WiFi is by buying and installing Beautiful Widgets
. The application contain a small widget as large as an icon that can turn on/off your WiFi connection.
Update: There is an additional way to fix the WiFi sleep problem by downloading Spare Parts application from Android Market. The application adds additional settings not normally available and under “Other secret system settings” you can access WiFi sleep policy. If you set it on never, you won’t experience the sleeping issue anymore but the battery will drain much faster. Use it on conjunction with the WiFi On/Off widget and you are set.
Update 2: There is now a way to force your Nook Color to connect to the previous access point when coming back from sleep. In order to achieve it, you’ll need a special script that will enable / disable the WiFi every time you get the device back from sleep. Here is how to do this:
1. Download this app (Setting Profiles Full). The app is $4 but that is a small amount to pay in my opinion to enable Nook Color tethering the proper way!
2. You will need to create two profiles in the Setting Profiles Full app. One profile to turn WiFi On, the other profile to turn WiFi Off.
3. In the same app (Setting profiles Full) create two rules, one rule to turn WiFi Off when Nook Color Screen Turns Off, the other rule to turn WiFI On when the screen turns On. In order to add a condition around Nook Color Screen being Off, just use the inverse logic option as in the screenshots.