Restore AppData overwritten files

Question

History of issue: I was trying to restore my deleted tab history of Mozilla Firefox browser, which I didn't synchronize with my account, and I have made a LOT of mistakes. I tried to restore previous versions of files via Shadow Copies with ShadowExplorer. My first mistake was that I didn't create backup of that folder before overwritting it with ShadowExplorer. Second, I tried to restore files with System Restore, however, I didn't knew much and ended up rebooting my pc, and, unfortunatelly, it did nothing (Which I know now that it only restores registers for some reason).

The OS is Windows 8

I know that support for it ended long ago, but I am a little desperate.

Is there any possible way of restoring those files? I tried turning off TRIM for C: drive, using recovering software, like Disk Drill or Stellar Data Recovery, but I can't retrieve my files back with them. I even tried viewing shadow copies again with Recuva and other software, but they aren't working, because data there is strangely corrupted.

I didn't have file history turned on, because windows 8 has it turned off by default, nor any backups. I know, that is stupid.

Please, if you have any idea how to fix this, please, help me. I am looking for anything. I am begging for any possibility.

At least I hope to restore my start menu layout and browsers history.

Answer 1

We don't know why they are corrupted.

Answer 2

For future matter, I just realised that I copied data from the shadow copy, and pasted with overwritting in the same folder. Could this be the reason of corruption?

Answer 3

If it is overwritten, it is overwritten.

Your next step is to see ?date Recovery specialists, who are VERY, VERY expensive.

A word of advice:

You should always have your data backed up to at least two external media destinations (external hard drive, DVDs, flash drive) in case of system file corruption and/or hard drive failure

And that includes backing up Favs and Bookmarks.