Products > Test Equipment

SDM3045X to SDM3055X-E "Improvement" Thread

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KungFuJosh:
I created this thread so that there was something specifically dedicated to "improving" the SDM3045X DMM.

For those of you that don't already know, the SDM3045X 4.5 digit hardware is identical to the Chinese version SDM3055X-E DMM. With a fairly simple firmware modification, you can improve your DMM to 5.5 digits.

I've been enjoying my 3055X-E for 4 months without any issues.

To make the improvement, check out this post:

--- Quote from: tv84 on December 31, 2021, 07:36:15 pm ---patch the original SDM3055X-E_2.01.01.12.ADS with the following 16 bytes.

Then it's ready to flash in a SDM3045X.  As always, do it at your own risk.



--- End quote ---

https://www.eevblog.com/forum/testgear/siglent-sdm3045x-enough-is-enough/msg3909188/#msg3909188 - more details are in that thread if needed, I think they also covered "unimproving" the device.

After modifying that specific version of the firmware, you can update to any unmodified SDM3055X-E firmware.

Language default will probably be in Chinese. To change it:
Click the Utility button, then System Config should be in English (2nd from right soft button if it isn't),
then Language should also be in English (1st soft button on left if it isn't).
The first language option should be English (but written in Chinese).

jas:
I tried to update my SDM3045X with a patched SDM3055X-E_2.01.01.12.ADS file, but it failed with "Update Fail" message.

I thought maybe the file is somehow corrupted and tried to update with a SDM3045X_5.01.01.07R1.ADS file which would downgrade the current sw, but that fails too.
The current sw version of my SDM3045X is 5.02.01.09R2, which is a bit strange, because the latest version available on Siglent's website for SDM3045X is 5.01.01.09R2.

I tried with three different USB sticks (all FAT32 formatted) and all failed. Am I missing something, or why the firmware update fails?

Veteran68:
Not suggesting it's your problem, but Siglent gear is known to be quite finicky about USB flash drives. I've sometimes had to try several different ones to get one to be recognized for firmware updates, and have read countless reports of same from other users. Once I found one that worked, I labeled it for Siglent use. I keep all my flash drives in a zippered case that's bulging at the seams with probably 2 dozen varieties, so I could never remember which ones worked well and which didn't until I labeled one.

KungFuJosh:

--- Quote from: jas on September 21, 2023, 05:37:56 pm ---I tried to update my SDM3045X with a patched SDM3055X-E_2.01.01.12.ADS file, but it failed with "Update Fail" message.

I thought maybe the file is somehow corrupted and tried to update with a SDM3045X_5.01.01.07R1.ADS file which would downgrade the current sw, but that fails too.
The current sw version of my SDM3045X is 5.02.01.09R2, which is a bit strange, because the latest version available on Siglent's website for SDM3045X is 5.01.01.09R2.

I tried with three different USB sticks (all FAT32 formatted) and all failed. Am I missing something, or why the firmware update fails?

--- End quote ---

I would suggest trying to flash an unmodified version of the firmware V5.01.01.09R2 and see if that works or not. If not, then it's possible that either we need hacking instructions for newer firmwares, or your hardware might not be compatible with this mod.

jas:
I tried with V5.01.01.09R2 and that fails too.
So, either there is something wrong with my USB sticks, or Siglent has prevented this kind of firmware updates with the new V5.02.01.09R2 version.

The USB sticks could be the problem, but I have been using them to update my other Siglent equipment without any trouble, so I don't think there is anything wrong with them, but of course I cannot be 100% sure.

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