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

 

Huawei Android Smartphones

Connect

Download Mode

U8667, U8680, U8681, U8730, U8800, U8815, U8816, U8818, U8820, U8825D, U8860, C8860E U8655, U8665, U8666, U8833, U8950, U8950D, U8951, U8951D

  1. Switch the device OFF
  2. Remove the flash card from the phone
  3. Press and hold down Vol -, Vol + buttons simultaneously, then press and hold Power until your phone completely freezes on the pink screen

When the phone is in "Download mode" you need to connect it to computer and install required driver (only if the phone is connected for the first time).

Fastboot mode

Different Huawei smartphones have slightly different procedure of entering the Fastboot mode:


Huawei U8180

  1. Switch the device OFF
  2. Remove the battery and hold it removed for 10 seconds, then place it back
  3. Press and hold down Vol -, Menu and Power buttons simultaneously until your phone completely freezes

Huawei U8110, U8150, U8160, U8220, U8230, U8350, UM840, U8500

  1. Switch the device OFF
  2. Remove the battery and hold it removed for 10 seconds, then place it back
  3. Press and hold down Vol -, End Call (Red) and Power buttons simultaneously till your phone completely freezes

Huawei U8151, U8510, U8600, U8650, U8652, U8655, U8666, U8815, U8816, U8818, U8665, U8825D, U8833, U8950, U8950D, U8951, U8951D

  1. Switch the device OFF
  2. Remove the battery and hold it removed for 10 seconds, then place it back
  3. Press and hold down Vol - and Power buttons simultaneously till your phone completely freezes

When the phone is in "Download mode" you need to connect it to computer and install required driver (only if the phone is connected for the first time).

ADB Mode
  • Remove SIM card and then power the phone ON.
  • Enable USB debugging on the device;
    • Android 2.3: Settings > Applications > Development menu;
    • Android 4.0: Settings > Developer options
    • Android 4.2.2: Settings > About phone > Build number > Developer options
  • Connect the phone to PC and install ADB driver for your device.
  • Root the smartphone.
    • We recommend using Vroot or Kingo solution to root your device.
  • Restart the smartphone after rooting has been completed.

Unlock

Direct unlock
  1. Select "Qualcomm" platform from the tab menu in the upper left side of the software
  2. "Phone model" dropdown box has to be set to "Autodetect"
  3. Go to "Unlock" tab
  4. Set the phone either to Fastboot or to Download mode (procedure is explained in the Fastboot / Download mode manuals)
  5. Connect your device to PC with USB cable
  6. Install required Huawei smartphone driver (only if the phone is connected for the first time)
  7. Select required Interface in the ports selection tab:
    • Fastboot mode: Phone will be detected as Android Sooner Single ADB Interface in device manager
    • Download mode: Phone will be detected as DBAdapter Reserved Interface in device manager
  8. Press "Unlock" button

IMPORTANT! All smartphones should be connected to PC's USB 2.0 port directly. Run Sigma Software as Administrator in order to work with Huawei Android smartphones.
Kyivstar Terra and Aqua: unlock works with factory firmware only.


Phones with the locked bootloader: during Direct (Service Provider) Unlock procedure using Download Mode connection, bootloader of this phone will be unlocked automatically.

Direct unlock via ADB mode (phone in turned on state)

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
Get unlock codes
  1. Select "Qualcomm" platform from the tab menu in the upper left side of the software
  2. "Phone model" dropdown box has to be set to "Autodetect"
  3. Go to "Unlock" tab
  4. Set the phone either to Fastboot or to Download mode (procedure is explained in the Fastboot / Download mode manuals)
  5. Connect your device to PC with USB cable
  6. Install required Huawei smartphone driver (only if the phone is connected for the first time):
  7. Select required Interface in the ports selection tab:
    • Fastboot mode: Phone is detected as Android Sooner Single ADB Interface
    • Download mode: Phone is detected as DBAdapter Reserved Interface
  8. Press "Get Unlock Codes" button

For Huawei smartphones Sigma doesn't show unlock codes. It shows Lock Status and a number of available code entry attempts near each type of code.
Closed lock: active unlock code
Open lock: inactive unlock code

Direct unlock for U8520, U9000
  1. Install required drivers (only if the phone is connected for the first time):
  2. Select "Qualcomm" platform from the tab menu in the upper left side of the software
  3. "Phone model" dropdown box has to be set to "Autodetect"
  4. Go to "Unlock" tab
  5. Set the phone to Download mode
    1. Power the phone off
    2. Press Vol + and Power ON simultaneously
  6. Connect your device to PC with USB cable
  7. Select Diagnostics Interface / Diag port in the ports selection tab
  8. Press "Unlock" button
Read unlock codes for U8520, U9000
  1. Install required drivers (only if the phone is connected for the first time):
  2. Select "Qualcomm" platform from the tab menu in the upper left side of the software
  3. "Phone model" dropdown box has to be set to "Autodetect"
  4. Go to "Unlock" tab
  5. Set the phone to Download mode
    1. Power the phone off
    2. Press Vol + and Power ON simultaneously
  6. Select Diagnostics Interface / Diag port in the ports selection tab
  7. Press "Get unlock codes" button
  8. Message "Reading Unlock Codes… OK" indicates that procedure was completed successfully
  9. Disconnect the handset

How to enter Read Codes

  1. Turn the phone on with the non-original SIM card inserted
  2. Phone's menu will pop-up with unlock code request
  3. Enter the code that was read by Sigma Software
Direct unlock for Y560, Y625, U8850
  1. Install required drivers for your model (only if the phone is connected for the first time):
  2. Select "Qualcomm" platform from the tab menu in the upper left side of the software
  3. "Phone model" dropdown box has to be set to "Autodetect"
  4. Go to "Unlock" tab
  5. Connect the phone to PC with USB cable
  6. Turn the phone ON and wait until it fully powers on
    • for SoftBank 007HW model: Press Vol + and Power ON simultaneously until you see a message that you are now in a Download mode
  7. Select Huawei Diagnostic Port in the ports selection tab (for Y560, Y5: select DBAdapter Reserved Interface)
  8. Press "Unlock" button
  9. Message "Unlocking phone… Done" indicates that procedure was completed successfully
  10. Disconnect the handset
Read unlock codes for Y560, Y625, U8850
  1. Install required drivers for your model (only if the phone is connected for the first time):
  2. Select "Qualcomm" platform from the tab menu in the upper left side of the software
  3. "Phone model" dropdown box has to be set to "Autodetect"
  4. Go to "Unlock" tab
  5. Connect the phone to PC with USB cable
  6. Turn the phone ON and wait until it fully powers on
    1. for SoftBank 007HW model: Press Vol + and Power ON simultaneously until you see a message that you are now in a Download mode
  7. Select Huawei Diagnostic Port in the ports selection tab (for Y560, Y5: select DBAdapter Reserved Interface)
  8. Press "Get unlock codes" button
  9. Message "Reading unlock codes… Done" indicates that procedure was completed successfully
  10. Disconnect the handset
Direct unlock for Mediapad S7-1XX and S7-2XX tablets
  1. Select "Qualcomm" platform from the tab menu in the upper left side of the software
  2. "Phone model" dropdown box has to be set to "Autodetect"
  3. Go to "Unlock" tab
  4. Set the phone to Download mode:
    1. Power the device OFF
    2. Remove the flash card from the device
    3. S7-10X models: Press Vol+, Back and PowerOn buttons simultaneously until the device completely freezes
    4. S7-20X models: Press and hold down Vol -, Vol + buttons simultaneously, then press and hold Power until your phone completely freezes
  5. Connect your device to PC with USB cable
  6. Install required Huawei S7 Mediapad driver (only if the phone is connected for the first time)
  7. Select DBAdapter Reserved Interface in the ports selection tab
  8. Press "Unlock" button
  9. During Unlock procedure, Sigma will prompt the user to disconnect USB cable for a couple of seconds and reconnect it again
  10. The message "Unlocking phone... Done" indicates that procedure was completed successfully

Repair

Repair IMEI
  1. Select "Qualcomm" platform from the tab menu in the upper left side of the software
  2. "Phone model" dropdown box has to be set to "Autodetect"
  3. Go to "IMEI" tab
  4. Set the phone either to Fastboot or to Download mode (procedure is explained in the Fastboot / Download mode manuals)
  5. Connect your device to PC with USB cable
  6. Install required Huawei smartphone driver (only if the phone is connected for the first time):
  7. Select required Interface in the ports selection tab:
    • Fastboot mode: Phone will be detected as Android Sooner Single ADB Interface in device manager
    • Download mode: Phone will be detected as DBAdapter Reserved Interface in device manager
  8. Enter IMEI number in the "Phone IMEI" field
  9. Press "Repair IMEI" button
  10. The message "Done" indicates that procedure was completed successfully
  11. Disconnect the handset, remove and reinstall the battery

IMPORTANT! All smartphones should be connected to PC's USB 2.0 port directly. Run Sigma Software as Administrator in order to work with Huawei Android smartphones.
Kyivstar Terra and Aqua: Repair IMEI works with factory firmware only.

Repair IMEI for U8520, U9000
  1. Install required drivers (only if the phone is connected for the first time):
  2. Select "Qualcomm" platform from the tab menu in the upper left side of the software
  3. "Phone model" dropdown box has to be set to "Autodetect"
  4. Go to "IMEI" tab
  5. Set the phone to Download mode
    1. Power the phone off
    2. Press Vol + and Power ON simultaneously
  6. Connect your device to PC with USB cable
  7. Select Diagnostics Interface / Diag port in the ports selection tab
  8. Enter IMEI number in the "Phone IMEI" field
  9. Press "Repair IMEI" button
  10. Message "Done" indicates that procedure was completed successfully
  11. Disconnect the handset
Repair IMEI for Y560, Y625, U8850
  1. Install required drivers for your model (only if the phone is connected for the first time):
  2. Select "Qualcomm" platform from the tab menu in the upper left side of the software
  3. "Phone model" dropdown box has to be set to "Autodetect"
  4. Go to "IMEI" tab
  5. Connect the phone to PC with USB cable
  6. Turn the phone ON and wait until it fully powers on
    • for SoftBank 007HW model: Press Vol + and Power ON simultaneously until you see a message that you are now in a Download mode
  7. Select Huawei Diagnostic Port in the ports selection tab (for Y560, Y5: select DBAdapter Reserved Interface)
  8. Enter IMEI number in the "Phone IMEI" field
  9. Press "Repair IMEI" button
  10. Message "Done" indicates that procedure was completed successfully
  11. Disconnect the handset
Repair damaged security area / allow firmware downgrading

User agreement:

This option is introduced for advanced users that have clear understanding what they do with the phone during all stages of repair.

Procedure:

The operation takes 4 steps:

  1. Restore security data file:
    • Download Repair file for your phone from Sigma section of boot-loader.com website -> Huawei -> U8XXX -> Repair_Files
    • Flash this Repair File:
      • Choose appropriate Repair File (in SKF format)
      • Select carrier's settings in the bottom drop-down list
        • Execute the following Linux shell commands on your PC with ADB Shell:
          1. adb shell
          2. cd cust
          3. ls
            XXX - this is the operator's name. It can be different on your phone
          4. ls XXX
            YYY - this is the country
        • So you should find XXX/YYY in the "carrier's settings" list and use these settings for repair. These are the provider settings of your CURRENT firmware (the fw version that actually in the phone now).
      • Push "Repair Security Area" button and wait for the procedure to finish
  2. Flash original firmware file for your model: Battery should be minimum 50% charged before re-flashing!
    • Download flash file either from file area at boot-loader.com -> Huawei ->, or from another trusted source.
    • Copy entire dload folder (with update.app in it) to the root directory of the MICRO SD card and flash it accordingly to the manual that is packed with each flash file as pdf document.
  3. Validate upgrade:
    You MUST perform all the above actions due to peculiarity of upgrade process of Huawei Android smartphones.
    • After upgrade, power the phone ON (if it wasn't powered ON automatically)
    • Dial *#06# and check phone's IMEI - it should be 11111111111111
    • DON'T power the phone OFF and leave it in this state for 10 minutes
    • Power the phone OFF, remove the battery and wait for 1-2 minutes; install it back into the phone and fully power it ON once again
    • Dial *#06# and:
      • if IMEI is still "11111111111111", go to stage 4
      • if IMEI is "0", return to stage 2, and on the stage 3 increase time when the phone should be in powered ON state to 15-30 min.
  4. Repair IMEI of the phone
    After 3 above stages, IMEI of the phone will remain blank, so you need to restore it. Use the general IMEI Repair manual for Huawei smartphones for it.

Known problems and solutions (KPNS):

  • No repair file for my model: Save Huawei security area from the fully working phone (Qualcomm -> service tab of Sigma) and send it to us for the analysis
  • WI-FI don't work or Notification/status bar missing: repeat the procedure, but use another provider data that corresponds with the firmware file you are flashing
  • IMEI is null/blank or can not connect to WI-FI signal: repeat the procedure with paying more attention to the "Stage 3"
  • What carrier's settings to use: Watch this video tutorial explaining how to find out what carrier's settings are in your current phone's firmware. These carrier's settings can be changed after re-flashing the smartphone with another firmware version

Work with Bootloader

Download Mode

Get Huawei bootloader unlocking password
  1. Select "Qualcomm" platform from the tab menu in the upper left side of the software
  2. "Phone model" dropdown box has to be set to "Autodetect"
  3. Go to "Service" tab
  4. Set the phone to Download mode (procedure is explained in the Download mode manual)
  5. Connect your device to PC with USB cable
  6. Install required Huawei smartphone driver (only if the phone is connected for the first time)
  7. Select DBAdapter Reserved Interface in the ports selection tab
  8. Press "Get Huawei bootloader password" button
  9. Password which was read will be shown in the log window

IMPORTANT! All smartphones should be connected to PC's USB 2.0 port directly. Run Sigma Software as Administrator in order to work with Huawei Android smartphones.

Unlock Huawei bootloader
  1. Select "Qualcomm" platform from the tab menu in the upper left side of the software
  2. "Phone model" dropdown box has to be set to "Autodetect"
  3. Go to "Service" tab
  4. Set the phone to Download mode (procedure is explained in the Download mode manual)
  5. Connect your device to PC with USB cable
  6. Install required Huawei smartphone driver (only if the phone is connected for the first time)
  7. Select DBAdapter Reserved Interface in the ports selection tab
  8. Press "Unlock Huawei bootloader" button
  9. The message "Done" indicates that procedure was completed successfully
  10. Disconnect the handset, remove and reinstall the battery

IMPORTANT! All smartphones should be connected to PC's USB 2.0 port directly. Run Sigma Software as Administrator in order to work with Huawei Android smartphones.

ADB Mode

Unlock Huawei bootloader

It's mandatory to root device before unlock!

Unlocking of bootloader:

  1. Select "Android ADB" platform from the tab menu in the upper left side of the software
  2. Go to "Qualcomm" tab
  3. Power the phone ON and wait until it starts completely
  4. Make sure that USB debugging is enabled on your device
  5. Connect your device to PC with USB cable
  6. Install required Huawei ADB driver (only if the phone is connected for the first time)
  7. Select ADB Android Interface in the ports selection tab
  8. Press "Unlock Huawei bootloader" button
  9. The message "Done" indicates that procedure was completed successfully
  10. Disconnect the handset, remove and insert the battery
Get Huawei bootloader password

It's mandatory to root device before unlock!

Getting the password:

  1. Select "Android ADB" platform from the tab menu in the upper left side of the software
  2. Go to "Qualcomm" tab
  3. Power the phone ON and wait until it starts completely
  4. Make sure that USB debugging is enabled on your device
  5. Connect your device to PC with USB cable
  6. Install required Huawei ADB driver (only if the phone is connected for the first time)
  7. Select ADB Android Interface in the ports selection tab
  8. Press "Get Huawei bootloader password" button
  9. Read password will be shown in the log window

Also you can get bootloader password at the official Huawei website here and here.

Video instructions
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