Prior to installing any custom firmware or ROM
making a full system backup is absolutely essential
A backup image is a complete copy of your device’s current system, data, and settings
Should the update fail, your device becomes unresponsive, or you encounter critical glitches
you can restore your device to its previous state using this backup
This simple step protects your hours, your files, and your wallet
First, make sure your battery level is at 100% or at minimum 70%
If the battery dies during backup, your data could be permanently damaged
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
Once developer options are enabled, connect your device to your computer using a reliable USB cable
Make sure your computer has the proper drivers installed for your device
Then boot your device into recovery mode
Check your device’s manual for exact instructions: some use Power + Vol Up, others Power + Vol Down, or even a dedicated recovery button
Your custom recovery will display a clean menu with core functions including Backup, Advanced, and Flash
Choose the Backup option
You’ll be prompted to select which system areas to include in the backup
At minimum, select system, data, boot, and recovery
If your device uses a separate vendor partition, اکتیو دانگل include that as well
If dtbo or persist shows up, select them for safety
The backup process may take several minutes depending on your device’s storage size and speed
Do not interrupt it
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Always make a secondary copy on your desktop, cloud, or external storage
This way, even if your device becomes unbootable, you still have the backup accessible from another device
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
Hold onto your backup for at least 14–30 days, even if the flash seems perfect
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
All you need is your phone, USB cable, and a computer—no extra software is essential
Never skip this step, no matter how confident you feel about the flash you’re about to perform
Your photos, messages, and apps are irreplaceable—backup is your only lifeline