Recently I’ve been revisiting some hardware hacking techniques. I purchased a Hydrabus and a standard SOIC-8 clip from DigiKey to assist with this task. For practice, I decided I wanted to attempt to extract the firmware from the same DVR system I experimented with back in 2015. Link to post.

After inspecting the circuit board, I found a flash memory chip on the back.

Some careful lighting adjustments revealed the chip was a Winbond W25Q128FV, which is supported by flashrom.