Full Image Installation

Caution

Flashing will format the system. Please back up your data in advance.

Flashing Tool Installation

Before using the A8550MA1, developers need to pre-install the necessary software on a local Windows PC:

• USB Driver: USB_Driver_qud.win.1.1_installer_10061.1.zip
• System Flashing Tool: QPST_2.7.496.zip
• ADB Tool: platform-tools.zip

Software download link: Software Tool Package Download

USB Driver Installation

1. Extract USB_Driver_qud.win.1.1_installer_10061.1.zip
2. After extraction, double-click setup.exe to launch the "Qualcomm USB Drivers" installation window
3. Follow the installation wizard and click Next until the driver installation is complete

System Flashing Tool Installation

1. Extract QPST_2.7.496.zip to the current folder
2. Navigate to the extracted QPST_2.7.496 directory and double-click QPST.2.7.496.1.exe to install
3. Follow the prompts and click next to complete the installation
4. Default installation path: C:\Program Files (x86)\Qualcomm\QPST\bin
5. You can enter this directory and create a desktop shortcut for QFIL.exe

ADB Tool Installation

1. Extract platform-tools.zip to the D: drive
2. Copy the extracted platform-tools path
3. Right-click "This PC" → "Properties" → "Advanced system settings" → "Environment Variables"
4. In "System variables", select the Path variable and click "Edit"
5. Click "New" and add the platform-tools path
6. Click "OK" to save the settings
7. Open a CMD window and enter adb; no error means installation is successful

Ubuntu System Installation

Enter Flashing Mode

1. After the device powers on, connect it to the computer using a USB Type-A to Type-C cable

   • Type-A end to the computer's USB port
   • Type-C end to the device's Type-C port

2. Once connected, press Win+R on the Windows PC, enter cmd, and run:

adb devices

A connected device should normally be listed. If not, wait briefly or re-plug the Type-C cable.

3. Switch to flashing mode:

adb root
adb reboot edl

Tip — Force Entry into 9008 Flashing Mode

Long-press the SW1 button, power on the device, continue holding for about 3 seconds, then release. The device will enter firmware flashing mode.

Configure QFIL Configuration Settings

1. Open QFIL, click Configuration → FireHose Configuration
2. In the Download Configuration window, set:
   • Download Protocol: select 0-Sahara
   • Device Type: select ufs
   • Check Reset After Download
   • Keep other options at default
3. After configuration, click OK to save

Select Flashing Port

1. Click Select Port
2. In the popup window, select the 9008 port and click OK
3. If the 9008 port does not appear, power cycle and re-enter flashing mode

Select Flashing Files

1. Extract the ROM file, find Select Build Type, and choose Flat Build.
2. Find Select Programmer, click Browse... next to Programmer Path
3. Navigate to the extracted ROM file directory
4. Change the file type filter to All Files (*.*)
5. Select xbl_s_devprg_ns.melf and click Open

Select Flashing XML Files

1. Find Select Flat Build and click Load XML... below it
2. In the popup window, select all XML files and click Open
3. Another window will automatically pop up; select all patch XML files and click Open

Start Flashing

1. After all options are selected, click Download to start flashing
2. Wait for the successful message indicating flashing is complete
3. If flashing fails, please contact APLUX after-sales support

First Boot After Flashing

1. After successful flashing, the system will automatically start
2. Wait for the system to boot (approximately 1–2 minutes)

Warning

Do not unplug the USB cable or cut power during flashing. Interruption will corrupt the firmware partition and render the device unable to boot.
If flashing fails unexpectedly, power off, disconnect the cable, then power on again to re-enter EDL mode and re-flash to recover.