Reminder! Before servicing the phone, please make sure that:

  1. You use the latest version of Sigma software
  2. Battery charged more than 50%
  3. All the side programs, that may interfere with the phone, are closed
  4. Phone’s cable and device itself should not be disconnected or disturbed until the procedure is fully completed
  5. Connect phone to USB port placed on the backside of PC (motherboard's USB port)
    Do not connect or disconnect other USB cables into the PC during the actual work with the phone
  6. Avoid using any kind of USB HUBs and long USB cables. Use the shortest-length USB cable available.
  7. Phone has stock (factory) firmware version
  8. SIM card is removed

 

Broadcom: Android Smartphones

Enable USB Debugging and Root
  • Remove SIM card and then power the phone ON.
  • Enable USB debugging on your device:
    • Android 2.0-2.3.x: Settings > Applications > Development > USB Debugging
    • Android 3.0- 4.1.x: Settings > Developer Options > USB Debugging.
    • Android 4.2.x and higher: Settings > About Phone > Build number > Tap on "Build number" 7 times to enable developer options. Then Go to Settings>Developer Options>USB Debugging.
    • Android 5.0: the same as Android 4.2.x.
  • Install ADB drivers (only if the phone is connected for the first time).
    • You may use this ADB driver installer if you don't have ADB driver for your phone.
  • Root the smartphone, as it has to be rooted in order to be unlocked! Here are some of the solutions for rooting:
  • Restart the smartphone after rooting has been completed.
Direct unlock

It's mandatory to root device before unlock!

  1. Turn the rooted phone ON and wait until it fully starts up
  2. Connect the phone to PC using USB cable
  3. Select "Android ADB" platform from the tab menu in the upper left side of the software
  4. Go to "Unlock" tab
  5. Select "Adb interface" in the ports selection tab
  6. Press "Unlock" button
  7. The message "Unlock done… OK" indicates that procedure was completed successfully
  8. Disconnect the handset
  9. Phone is unlocked
Repair IMEI

It's mandatory to root device before Repair IMEI operation!

  1. Turn the rooted phone ON and wait until it fully starts up.
  2. Make sure that USB debugging is enabled on your device.
  3. Select "Android ADB" platform from the tab menu in the upper left side of the software.
  4. Go to "IMEI" tab.
  5. Connect the phone to PC with micro USB cable.
  6. Select "Adb interface" in the ports selection tab.
  7. Enter IMEI number in the "Phone IMEI" field.
  8. Press "Repair IMEI" button.
  9. The message "Done" indicates that procedure was completed successfully.
  10. Wait for the message "Restarting phone... Done" to appear in Sigma dialog window; only after that you can turn the phone off.
Video Instructions