How can i restore files? I lost all my photos and whatsapp chat history. There must be a possibility?! But how?
The first step is to not boot the phone until you get a dump of your data partition. Booting to a custom recovery is okay--a full Android boot is not.
In recovery (using the ADB shell), umount data and get a dump of the data partition (/dev/block/mmcblk0p37) using "dd". Since you can't write to the data partition while making its dump, you'll need to write to /system. Since /system isn't very big, you'll need to do the dump in pieces of about 350 MB each (depends on how much free space you have in /system).
The "dd" parameters you'll need are "bs" to speed things up, "skip" to tell it where to start the chunk, and "count" to determine how big the chunk is. Since /data is 25.6 GB, you'll need to do this 60-70 times, and after each chunk, use "adb pull" to copy the chunk to your computer. When you have all the chucks, reassemble them and make sure it's the same size as /dev/block/mmcblk0p37. Make sure it's a valid ext4 filesystem. Then you can start using data recovery tools.
So put your money where your mouth is and do it.
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