Before you flash a new firmware or custom ROM onto your device

creating a backup image is one of the most important steps you can take

This backup captures your entire OS, apps, اکتیو دانگل settings, and personal files

Should the update fail, your device becomes unresponsive, or you encounter critical glitches

you’ll be able to roll back to exactly how things were before

It prevents data loss, avoids costly service visits, and spares you from buying a new device

Begin with a strong charge—never start below 70%

Power loss mid-backup may corrupt your system image or render it unusable

Go to Developer Options and toggle on USB Debugging and OEM Unlocking

These settings are typically found under Settings > About phone, where you need to tap the build number several times to unlock developer mode

Use a high-quality, original USB cable to ensure stable communication

Verify that your system recognizes your device via USB with the right OEM drivers

Proceed to enter recovery mode by powering down and using button combinations

Different brands use unique key combos—commonly Power + Vol Up, Power + Vol Down, or Power + Home

If you’re using a custom recovery like TWRP, you’ll see a menu with options like backup, wipe, and install

Tap on "Backup" from the main recovery menu

The interface will list available partitions and ask you to check the ones you want

Essential partitions: system, data, boot, and recovery must be selected

Don’t forget vendor if it appears in the list—it holds critical firmware components

Even if you’re unfamiliar with dtbo or persist, include them to ensure a complete backup

Depending on your phone’s internal speed and storage capacity, this can take 2 to 15 minutes

Avoid unplugging, rebooting, or touching the device during backup

The system saves the image under a folder like "TWRP" or "Backup" inside your phone’s memory

It’s a good idea to copy this entire folder to your computer for safekeeping

In case your phone won’t power on, you can recover your data from a computer

Proceed with flashing only after confirming your backup is complete and copied

Confirm the file’s MD5, SHA-1, or SHA-256 hash matches the official value

Never flash a file unless its hash and version are verified

Even if everything goes smoothly, keeping your backup around for a few weeks is wise

You may miss your previous UI, lose app functionality, or encounter buggy third-party apps

Your memories, chats, media, and preferences remain intact when you roll back

Creating a backup image is a simple step that can prevent hours of frustration

It takes only a few minutes and requires no special tools beyond what you likely already have

No matter how routine the flash seems, treat it as if it could fail

Your photos, messages, and apps are irreplaceable—backup is your only lifeline