Products > Test Equipment
MSO2000 Application module hack
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drsurfer:
Ah, ok. I misinterpreted his message.
computer7geek9:
I haven't messed around with decoding passwords so i figured it would be easier to just remove it completely. I saw your post about the password earlier but it didn't click when I worked on it tonight. 

I have tried re-flashing the original firmware but it won't even go to the splash screen.

Messing with embedded linux on a device with onboard memory is new to me as most of my experience is using development boards that boot from either usb or sd card so I have never had something that's not easily revertible to an older, working version. I'm just pissed at myself because I had all the modules working with the soft hack and I wanted to mess around with upgrading it to a 2024b for the hell of it. I have no use for the extra 100mhz, I just wanted to max the device out for the hell of it.
timb:


--- Quote from: computer7geek9 on March 01, 2016, 09:51:31 am ---I haven't messed around with decoding passwords so i figured it would be easier to just remove it completely. I saw your post about the password earlier but it didn't click when I worked on it tonight. 

I have tried re-flashing the original firmware but it won't even go to the splash screen.

Messing with embedded linux on a device with onboard memory is new to me as most of my experience is using development boards that boot from either usb or sd card so I have never had something that's not easily revertible to an older, working version. I'm just pissed at myself because I had all the modules working with the soft hack and I wanted to mess around with upgrading it to a 2024b for the hell of it. I have no use for the extra 100mhz, I just wanted to max the device out for the hell of it.

--- End quote ---

Don't beat yourself up. I've bricked plenty of routers in my day. It's easy to do when upgrading embedded firmware.

I'm going to try and help you get your scope back in action. As soon as I get back to my lab in a couple of days, I can dismantle my 2024B and start looking for programming pads, what type of flash it uses, etc.

I'm taking this as a personal challenge, mainly because my original unit bricked in the same way, with a factory firmware upgrade. So I'm curious how that can be fixed. Because there *has* to be an easy way to fix it. (If it's happened to two people, you can bet it's happened to many more.)
computer7geek9:

--- Quote from: timb on March 01, 2016, 09:33:05 am ---One would think that it wouldn't overwrite the boot loader first, but I don't know exactly how the upgraded works. It obviously copies the installer into to ram. Judging by the white screen and lack of serial data, I suspect it may wipe flash before copying the new bootloader and OS over.

If this is the case, the machine obviously wiped the flash and then encountered a silent error while copying the new data over.

If that's the case, then the only way to get the thing going may be through some sort of JTAG process.

--- End quote ---

In fwUpdate.sh it talks about uBootExtract Tool (line 326) checking the bootloader on the device and on the update. It says "If we can't extract the version from the scope, then update." But since it is clearly not getting to this step, do you know how to JTAG the bootloader partition (in bootloader.img I assume) to the partition /dev/mtd0 (line 53). I have never loaded anything through JTAG.
computer7geek9:

--- Quote from: timb on March 01, 2016, 09:56:52 am ---
Don't beat yourself up. I've bricked plenty of routers in my day. It's easy to do when upgrading embedded firmware.

I'm going to try and help you get your scope back in action. As soon as I get back to my lab in a couple of days, I can dismantle my 2024B and start looking for programming pads, what type of flash it uses, etc.

I'm taking this as a personal challenge, mainly because my original unit bricked in the same way, with a factory firmware upgrade. So I'm curious how that can be fixed. Because there *has* to be an easy way to fix it. (If it's happened to two people, you can bet it's happened to many more.)

--- End quote ---

That would be great. It would be really helpful to learn more about it since once I get in the workforce (currently a senior EE student), I will need to know more about embedded memory and how to fix this stuff, instead of just plugging in a new SD card.
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