Category Archives: File Repair

Recover .BRAW (Blackmagic RAW video) files

This is a small tale about how a relatively ‘obscure’ and rare file format can be close to unrecoverable using existing tools. To refresh our minds we can basically recover files in two ways: File system based. This is always the preferred method as the file system allows us to determine the precise location of… Read More »

Tenorshare 4DDiG JPEG Repair?!

New (to me at least) JPEG ‘repair’ tool, Tenorshare 4DDiG. So I test it against files I know to be repairable. Success!, it says, go buy license. Let’s see: Compare size original files vs. what it repaired. Can’t be right. I see option ‘view logs’, *click*. Now we see what it did, it didn’t repair… Read More »

Repair a Sony RAW ARW photo (visual damage)

I long believed that it was close to impossible to repair visually distorted RAW photos. But a while back I was able to repair a visually distorted Nikon RAW photo (NEF) and now a Sony ARW RAW photo. What both these damaged files had in common though is that the portion of the file that… Read More »

Wondershare, Stellar photo repair tools, scams or ..

Observation: YouTube videos and ‘honey-pot’ articles on Stellar and Wondershare website addressing the issue of grey blocks in, or half grey photos. Example: In the video we watch the miracle happen, and a few clicks later the files are repaired. Well, let me tell you, that I have tried the same with numerous files and… Read More »

Data Recovery from corrupt 7-Zip (7z) archive, a lucky break ..

I was looking through a 7-Zip file in an attempt to repair it using HxD. The archive was created by ZArchiver, an Android backup app. Once the backup was created the phone was reset. Repairing a corrupt 7z file. The maker of 7-Zip has some hints on repairing a corrupt .7z file. Header of the… Read More »

Recover lost or deleted Bitcoin Wallet.dat using R-Studio

While this blog post covers my initial ‘research’, intention of this blog is to give an easier to digest guide into recovering or undeleting a Bitcoin wallet.dat file. Note that if you delete files or lose files due to formatting on a SSD, they are beyond DIY Recovery!! In that case you increase chances of… Read More »

JpegDigger’s JPEG repair feature explained

JpegDigger features a JPEG repair option. What is this and what can it do? Repair will not per se result in a perfect image. It can however repair JPEGs to a degree where they can be opened and viewed, including their flaws. JPEG structure Let’s first look at how a JPEG file is organized internally.… Read More »

Recover embedded JPEGs from RAW – Expected quality.

Repairing corrupt RAW files Repair of corrupt RAW files is difficult due to various reasons: They’re proprietary formats. Although many RAW photos internally are organized similar to TIFF files, they’re modified TIF files. Also actual image data encoding is different from format to format. Because they’re proprietary formats, there’s not much software (if any?) to… Read More »

Repair and recovery of digital photos

[automatically translated. Original language Dutch] DiskTuna has extensive experience with generic data recovery but specializes in recovering photos from small flash-based data carriers (SD cards, USB thumb drives, etc.). DiskTuna is also one of the few (worldwide!) That is able to repair corrupt digital photos. You can read all about it on this page. You… Read More »

What makes photo and video recovery challenging?

Photo recovery challenges are often related to small flash based drives Most cases that land on my desk arrive as photo or video repair tasks. As I have stated before, many of those are the result of botched recovery jobs, or corruption is caused by a file system or physical issue with the drive. Also,… Read More »