Critical Prep: Backup Your Device Before Flashing Firmware > 자유게시판

Prior to installing any custom firmware or ROM

a comprehensive backup should never be skipped

It’s a full snapshot of your phone’s current state including apps, media, and configurations

In case of an interrupted flash, boot loop, or software incompatibility

you can restore your device to its previous state using this backup

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%

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

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

Install the correct ADB and Fastboot drivers for your specific phone model

Now restart your phone into recovery mode

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

Select backup

The system will ask you which partitions to back up

At minimum, select system, data, boot, and recovery

If vendor is listed, make sure to check it too

Some devices also have a dtbo or persist partition—include those if they appear and you’re unsure what they do

The backup process may take several minutes depending on your device’s storage size and speed

Do not interrupt it

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

Always make a secondary copy on your desktop, cloud, or external storage

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

Now that your backup is secured, you’re ready to install the new software

Use tools like HashChecker or WinMD5 to validate the downloaded ROM’s fingerprint

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 might discover that you prefer your old setup or run into compatibility issues with apps after the flash

Having the backup gives you the freedom to revert without losing personal data, messages, photos, or app settings

A few minutes of backup time saves you from days of data recovery and troubleshooting

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

Even expert users can encounter unexpected errors—always backup first

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