How to flash stock Rom on Google Nexus Device

Updated on July 3, 2018

These are the instructions to flash stock ROM (firmware) on Google Nexus Device using the Windows Computer.

Requirements: Your Google Nexus device should have at least 20-30 percent of battery to perform the flashing process.

Flash stock ROM (firmware) on Google Nexus Device

Step 1: Download and install Google Nexus USB drivers on your computer.

USB

Step 2: Download and install Minimal ADB and fastboot tool on your computer.

install minimal adb fastboot

Step 3: Download the Google Nexus Stock ROM for your device.

Step 4: After Downloading the firmware, you need to extract it on your computer. After extracting you will be able to see the following files:

google nexus files

Step 5: Now, enable USB Debugging on your Nexus Device. To enable USB Debugging: Open Settings > Developers Option > USB Debugging > Tick to enable.

(Developers Option is hidden for Android 4.2.2 or above, to show this option Go to Settings > About Phone > Built Number (Tap on it for 5-8 times).

Nexus 6 USB Debugging

Step 6: Now, Power off your Google Nexus Device.

Power Off Nexus 6

Step 7: Now, you need to boot your device into the fastboot mode. For that press and hold Volume Down + Power for 7-10 seconds until fastboot mode is enabled.

nexus fastboot mode

Step 8: Now, connect your Nexus Device to the computer using the data cable.

Connect Android Device with Computer

Step 9: Now, you need to unlock the bootloader (it can be locked later). To unlock the bootloader, Open MAF32.exe or py_cmd.exe from the Minimal ADB and fastboot folder (C:Program Files\Minimal ADB and Fastboot).

minimal adb files

Step 10: Once, Command Window is launched, Give the following command: fastboot oem unlock

minimal fastboot unlock

Step 11: Now, you will be able to see warning message on your device screen, Using your Volume UP button Select Yes to Continue.

unlock nexus bootloader

Step 12: Now, as your device bootloader is unlocked you can flash the firmware. To flash the firmware, Go to the extracted files and open flash-all.bat

google nexus files flash

Step 13: Now, flashing process will begin, and it will hardly take 5-10 minutes to complete.

Step 14: To lock the bootloader again, Open py_cmd.exe from the Minimal ADB and fastboot folder (C:Program FilesMinimal ADB and Fastboot). And give the following command: fastboot oem lock

minimal fastboot lock

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Readme Once:

[*] Caution: Flashing the Stock firmware will delete your personal data, so take a backup of your personal data before proceeding.

[*] Google Nexus Stock Firmware: If you are looking for the original firmware for your device then head over to Download Google Nexus Stock Firmware for all devices page.

[*] Google Nexus USB Driver: If you are looking for the original USB Driver for your device then head over to Download Google Nexus USB Driver for all devices page.

[*] Credits: The above flashing instruction is provided by Google at the Factory Image for Nexus Device Page. We made the instructions more noob friendly.

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