If I should buy $29.95, then there is a 50% chance that I will have full size image again, and 50% it still hasn't worked, so it's a waste of money and time. There is also freeware, but it is only with thumbnails. And thumbnails is fine.
With hex, see the video:
starts with JPEG Header: FF D8 (Magic numbers / bytes)
start with JPEG Data: FF DA
ends with: FF D9
On JPEG Header I have Camera Make and Model: HUAWEI EVA-L19 on both corrupted.jpg and fixed.jpg (on Windows is to right click the jpg, Properties and Details).
In his example, he had 2 hits on searching "FF DA", see screenshots:
(starts with 6:45)
I have 3 hits, see image:
Doble clicking on the last hit.
If I understand correctly,
remove from FF D8 to last hits before FF DA, I had 9B FF DA (header on corrupted.jpg)
copy from FF D8 to last hits before FF DA, I had 9B FF DA (header on fixed.jpg)
paste from FF D8 to last hits before FF DA, I had 9B FF DA (header on corrupted.jpg)
save and open again, and not working again.
Am I missing something?