Asus ZenFone Selfie Z00UD Flash File | Stock ROM Firmware

If you want to flash the stock ROM on your Asus ZenFone Selfie Z00UD, this is the page for it. Flashing the official firmware restores the phone to factory software, which fixes most software problems and can bring a bricked device back to life. Below you will find the official flash file and a step-by-step installation guide.

The ZenFone Selfie uses a Qualcomm Snapdragon chipset, so you flash it with the QFil (Qualcomm Flash Image Loader) tool rather than a standard recovery. QFil handles Snapdragon firmware through the phone’s Emergency Download (EDL) mode, and the steps below cover the whole process.

The Asus ZenFone Selfie Z00UD (model ZD551KL) runs a Qualcomm Snapdragon 615 and has a 5.5-inch Full HD display, up to 3GB of RAM, and up to 32GB of storage that you can expand with a microSD card. True to its name, it pairs a 13MP rear camera with a 13MP front camera and laser autofocus. It launched in 2015 on Android 5.0 Lollipop with ZenUI and was later updated to Android 6.0 Marshmallow, which is the firmware shared here.

Advantages of the Stock ROM

Here is why it is worth downloading and keeping the ZenFone Selfie stock ROM flash file on your computer. It lets you:

• Unbrick the device if it is dead or stuck
• Repair the IMEI using the DB files from the stock ROM
• Remove malware or adware
• Fix a bootloop
• Clear “Unfortunately, the app has stopped” errors
• Fix network-related issues
• Patch the boot image to root with Magisk
• Unroot the phone
• Restore the device to its factory state

Steps to Install the Asus ZenFone Selfie Z00UD Firmware

Before the installation steps, go through the prerequisites below.

Prerequisites

• This flash file is for the Asus ZenFone Selfie Z00UD / ZD551KL only. Do not flash it on any other model.
• You need a Windows PC or laptop.
• Charge the phone to at least 60%.
• Take a backup of your Android device, since flashing wipes everything.
• Download the QFil flash tool and install it on your PC.
• Install the latest Asus USB drivers and the Qualcomm USB drivers so the PC detects the phone in EDL mode.

Download Flash File

Method 1: Official firmware update

If your phone still boots, the safest option is the official route. Download the matching firmware ZIP for the ZD551KL from the Asus support site, copy it to the phone’s internal storage, and the system update prompt will offer to install it. You can also apply the official ZIP through the stock recovery. Only use the manual QFil method below if the phone will not boot or the official update will not apply.

Method 2: Flash with the QFil Tool

1. Extract the downloaded firmware on your PC. You should see the image files along with a programmer file (its name contains firehose or prog_emmc) and rawprogram and patch XML files.
2. Install and open the QFil tool.
3. Set Build Type to Flat Build.
4. Under Select Programmer, browse to and load the firehose programmer file from the extracted firmware.
5. Click Load XML and select the rawprogram file, then the patch file when prompted.
6. Power off the phone. Hold Volume Up (some units use Volume Up + Volume Down) and connect it to the PC with a USB cable to enter EDL mode. The phone’s port should appear in QFil as a Qualcomm HS-USB QDLoader 9008 device.
7. Click Download to start flashing.
8. Wait for it to finish, which usually takes about 10 to 15 minutes. Do not disconnect the phone during this time.
9. When it is done, the phone reboots on its own. The first boot can take a few minutes.

That is it, the stock firmware is now installed.

FAQ

Why do I need QFil instead of a normal flash tool?

The ZenFone Selfie uses a Qualcomm Snapdragon chip, and QFil is the tool built for flashing Qualcomm firmware through EDL mode. Tools like Odin or SP Flash Tool are for other chipsets and will not work here.

Will flashing the stock ROM erase my data?

Yes. The QFil process wipes the phone completely, so back up your photos, contacts, and files first.

The PC does not detect my phone in QFil. What is wrong?

Usually it is drivers. Install the Qualcomm QDLoader 9008 drivers and the Asus USB drivers, then re-enter EDL mode. A different USB cable or a rear USB port on a desktop can also help.

Does this firmware upgrade the phone to a newer Android version?

No. This is the Android 6.0 Marshmallow build, which was the last official version for the ZenFone Selfie. Flashing it restores or repairs that software rather than upgrading beyond it.

That covers installing the stock ROM on the Asus ZenFone Selfie Z00UD. If you hit any trouble during the flash, leave a comment below.