4 ms·
> I haven’t actually been brave enough to write a modified firmware to the thing yet - it’s a pretty expensive monitor - but I’ll get there at some point. Hone
by srcreigh 24d ago
> I haven’t actually been brave enough to write a modified firmware to the thing yet - it’s a pretty expensive monitor - but I’ll get there at some point.
Honestly if you don't have working patches, it's really not owned.
I would love to get a better understanding of how to safely iteratively patch firmware. I bricked a router last week trying to add a TFTP boot path to the boot partition. It just sucks that it's so risky.
Relatedly, we also need good glitching tools, as some firmware even for cheap devices are not available unencrypted, and flash read is disabled...
We are NOT there yet but I hope we get there soon.
- Retr0id 24d agoIf you're prepared to get out a soldering iron and/or chip-clip, you can usually back up and restore whatever IC stores the firmware you're modifying, giving you a recovery path. > we also need good glitching tools There are a lot already, what do you feel is missing?
- srcreigh 24d agoHow should I learn more about how to do it, what to buy, etc ? I haven't found ChatGPT to be a good teacher about this topic, and in particular re glitching, AI will refuse to discuss specifics I have enough basic soldering to get UART attached, but not sure what to try after that. Equipment-wise, I currently just have a few ESP32-C3s and electronics basics kit and some basic soldering stuff.
- Retr0id 24d agoThere are plenty of pre-2023 resources out there, especially conference talks. But, Claude has no issues discussing glitching if you have CVP.
- s3p 24d agoI guess this is a fine reply but just seeing your earlier comment, mentioning there are tons of glitching tools out there, I would've hoped to hear about some specifics here. Just my 2c
- ShinyLeftPad 24d agoIs this the zoomer syndrome I am hearing about lately? My friend says zoomer coworkers increasingly start asking easily searchable questions, and also (this part is not your comment, just my 2c) in a demanding tone like you owe them money. Allegedly they spend all their time in LLMs and lose the ability to gather information I wonder what humanity will look like in 20 years if this doesn't stop.
- csh0 24d agoI have encountered this behavior in people of all ages for as long as I can remember.
- ShinyLeftPad 24d agoI haven't and neither my friend
- perching_aix 24d agoAnd what are we supposed to do with the two of you apparantly living under a rock [0], and going through baby's first "kids these days" moments, exactly? Never heard of LMGTFY ("Let Me Google That For You")? Why do you think it exists? Or "Google / Wikipedia is your friend"? Or RTFM ("Read The Fucking Manual")? Really not new inventions (and "zoomers" were there for them, cause the oldest ones are pushing 30! [1]). Not hard to search for either, by the way... [0] or rather, going through some very conveniently selective amnesia [1] just to really give you a sense of how stupid this generation-xyz thing is, this "generation" includes people whose first OS was entirely possibly Windows 98, and at the same time, people whose first OS was Windows 10
- ShinyLeftPad 24d agoI heard of them but have literally never seen any of those phrases on HN. Therefore I'm saying what I'm saying;) I saw LMGTFY link once maybe...
- deleted 24d ago[deleted]
- jwrallie 24d agoI flashed coreboot on an x220 once [0], and I think that can give you a good overall idea of how backing up and reprogramming an SPI memory works. From that you could do your own research checking the ICs in your hardware, and extrapolating to the correct tools you will need to read/write the chip you have in mind. [0] https://stoisavljevic.com/articles/coreboot https://stoisavljevic.com/articles/coreboot
- cromka 24d agoch341a programmer with a clip attachment. That's basically it. A 10 USD investment. No soldering unless flash chip is SMD.
- MayeulC 23d agoPlease make sure you fix the 3.3 V output if you get that device. Most revisions have a PCB layout issue that will output 5V even in 3.3 V, which has bricked stuff before. There are many ways to fix it, one trace cut and one jumper is how I did it. https://libreboot.org/docs/install/spi.html#do-not-buy-ch341a https://libreboot.org/docs/install/spi.html#do-not-buy-ch341...
- beshur 23d agoWhat about automotive? I suspect automotive firmwares to be more protected already, but where do I start with playing with the infotainment systems?