This renders this thread pretty much obsolete, but I won't delete it, just in case anyone doesn't want to or cannot update his device for whatever reason
As there are only [Q]uestion threads about ad-hoc tethering by now, I thought I'd write a little guide how to enable it on our Transformer.
edit: If you are using Prime v1.5 (and above I guess), you don't have to do this. Roach2010 already included the modified wpa_supplicant, so you can already use ad-hoc tethering.
All credits and many thanks go to szym for the edited wpa_supplicant that makes ad-hoc possible for us!
!!! Always make a nandroid backup via recovery first! You can then reflash your backup if something fails !!!
I. Via root explorer (obviously requires root access):
If you bought root explorer from the market, you should be able to easily copy and replace the file.
1.) Go to /system/bin and copy the file „wpa_supplicant“ to your sd card as a backup.
2.) Then copy the „wpa_supplicant“ from the attached zip file and paste it into /system/bin.
3.) Long press the file and set permissions to rwxr-xr-x, like this:
User: read, write, execute
Group: read, execute
Others: read, execute
Finally tried it myself and works fine
II. Alternative method via adb (requires root access):
This is a forwarded guide from the Xoom section. I tried it myself and it works like a charm. You can find it here.
All credits for the following guide go to kelvie !
1.) Your Transformer has to be rooted! (you'll find a guide how to root here)
2.) Make a backup of your system/bin/wpa_supplicant first!
3.) Unpack the attached wpa_supplicant_xoom_wifi_adhoc.zip file to your adb folder. (if you don't know how to use adb, google for one of the many guides, or look below for another option via root explorer )
4.) push the file to system/bin/wpa_supplicant:
adb remount adb push system/bin/wpa_supplicant /system/bin/wpa_supplicant
adb shell chmod 755 /system/bin/wpa_supplicant
adb shell chown system.wifi /data/misc/wifi/wpa_supplicant.conf
Again, many thanks to kelvie for the guide!
1.)Download the attached CWM_adhoc_wpa_supplicant_TF101.zip to your sd-card. Make sure to copy it to /Removable/MicroSD, because /mnt/sdcard cannot be accessed from CWM
2.) Boot into CWM recovery.
3.) Hit "install zip from sdcard" --> "choose zip from sdcard", select the zip and confirm.
Done. You should now be able to tether your ad-hoc connection
This method doesn't seem to work because I missed an option and don't know right now how to fix it. So if somebody knows how to do this via edify script, please help me out:
chown system.wifi /data/misc/wifi/wpa_supplicant.conf
Use one of the methods above in the meantime, they works flawless.
Q: Which app should I use for tethering on my phone? Do I need root access for tethering apps?
A: If your phone doesn't support native tethering, just search the Android Market for 'Wifi tether'. There are a lot of apps for that . I tested Barnacle Wifi Tether on my Sony Ericsson Xperia X10 with 2.3.4 MIUI ROM, which worked fine, but I guess all/most tether apps should work fine now. And yes, unless you have native tethering, your phone has to be rooted.
Q: Barnacle gives me the following error on the phone: "DHCP could not bind to DHCP port, address already in use", and my TF is stuck at "obtaining IP Address from barnacle". What should I do?
A: rpavich has found a solution for that. Thanks rpavich!
Edit: I wasn't sure if this belongs in General or Android Dev section, so mods feel free to move it where it fits best.
Edit2: Attached original wpa_supplicant files for 3.0 and 3.1 (don't know if there's a difference, but I doubt it) if someone wants to reset to stock.
If you find this guide helpful, consider pressing the thanks button