The download links of Google Talk apk is available from xda-developers.com (registration required), but you download from the link below.



Method 1: Via ADB

1. Download either Talk_with AV.zip or Talk_with_AV_no_wifi.zip.
2. Connect the Adnroid phone to PC and run following commands on ADB console:

adb remount
adb shell mv /system/app/Talk.apk/system/app/Talk.apk1
adb uninstall com.google.android.talk
adb push libtalk_jni.so /system/lib/
adb push Talk2.apk /system/app
3. Run Talk and press on your own name where you can change your own status and tick the Allow video and voice chats to enable the feature.

Method 2: Using Root Explorer

1. Download and extract Talk_with AV.zip to SC card.
2. Open Root Explorer and navigate to extracted files on SDcard.
3. Copy talk2.apk and go to /system/app.
4. Press Mount R/W at the top right and then press Paste on the bottom left.
5. Now you have both talk.apk and talk2.apk.
6. Rename Talk.apk to Talk.apk1.
7. Select and hold the other Talk2.apk and press Permissions and select:

User: Read Write
Group: Read
Others: Read

And press Ok.
8. Now press and hold on Talk2.apk and press Rename.
9. And rename Talk2.apk to Talk.apk.
10. Go back to extracted files SDcard and copy libtalk_jni.so.
11. Navigate to system/lib.
12. Press Mount R/W at the top right and then press Paste on the bottom left.
13. Press and hold on libtalk_jni.so and select Permissions, and change the permissions to:

User: Read Write
Group: Read
Others: Read
14. Reboot the device.
15. Open Talk and press on your own name where you can change your own status and tick the Allow video and voice chats to enable the feature.

Method 3: Via a Flashable Update

Backup Talk.apk in case you want to go back to original version or encounter error.

Download talk1.3.nowifi.update-signed.zip which works on CM7.

Note that video chat may not work for most non-Google Nexus S phones. Some users have reported that installing “GoogleServicesFramework.apk” from the Google Apps Pack after version 20110503. However, the workaround does not work on all models.

Download Google Talk 1.3 APK
here.