firmware
DIGOO DG-HOSA – Part 2 Firmware Extraction and Initial Analysis
· ☕ 6 min read · ✍️ suidroot
This is a continuation from a previous post: https://ben.the-collective.net/hugo/posts/2019-08-21-digoo-dg-hosa-part-1-teardown-and-hardware/ Finding the connections Now that I have the lay of the land for the device (which that I outlined in my previous part of the series) the first thing I looked for is the debugging connections for the main GigaDevices processor. This processor looks to be the primary processor for the device and has the most valuable firmware. Since the board was well labeled I didn’t need to use any tools like a JTAGulator or an Arduino board with the JTAGenum firmware to identify which test points are the debug interface.