How to recover data on htc butterfly after factory reset?

Question

linux

There is a Russian htc butterfly, that is, the memory on it is not a card, but internal. A factory reset was made on the phone through the engineering menu (vol- and power), which erased some important photos and documents.
What was done:
1. It was revealed that the data partition is /dev/block/mmcblk0p34, FS ext4
2. An image of this partition was taken with the commands:
on the phone /system/xbin/busybox nc -l -p 5555 -e /system/ xbin/busybox dd if=/dev/block/mmcblk0p34
on machine adb forward tcp:5555 tcp:5555
nc 127.0.0.1 5555 | pv -i 0.5 > mmcblk0p32.raw
3. The testdisk program did not allow to make an undelete, you can only make an image, with the dd extension in the output.
Question: how can I now mount the resulting image andrecover data? Do I need to somehow convert raw to img, if so, how?

Answer 1

maybe this will help
www.chip.ua/stati/udaleno-ne-znachit-unichtozheno-mobilnye-ustroistva/

Answer 2

Mounting mount -o loop mmcblk0p32.raw /mnt/ fails?