Products > Test Equipment
New handheld scope+DMM, Fnirsi 2C23T, 2ch, 10MHz/50MSps (Nov 2023)
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StalineShadow:
Hi everyone,

I recently tried to update the firmware on my FNIRSI 2C23T 3-in-1 device. Unfortunately, after completing the update, the device powered off and now won’t turn back on. My PC does not detect the device anymore.

Here’s what I’ve observed:

When I disconnect the battery and plug the device into the PC, a green LED lights up.
When I reconnect the battery and then plug the device into the PC, the LED stays red.
Has anyone experienced a similar issue or have any suggestions on how to resolve it? Any help would be greatly appreciated!

Thanks in advance.
pilatomic:

--- Quote from: Tunas1337 on July 31, 2024, 09:33:45 pm ---Hi dibu, thanks for taking the time to work on that stuff! I am, much like you, interested in reversing the firmware and either making mods, or rewriting it from scratch.

Would you mind sharing your Ghidra file (.gzf format) with me? I'd like to save time and avoid extra work if you've already figured out all the functions.

Thanks in advance!

--- End quote ---
Hey,

Here you'll find my own Ghidra project and notes :
https://gitlab.com/Pilatomic/fnirsi_2c23t_fw


--- Quote from: StalineShadow on August 06, 2024, 07:05:46 pm ---Hi everyone,

I recently tried to update the firmware on my FNIRSI 2C23T 3-in-1 device. Unfortunately, after completing the update, the device powered off and now won’t turn back on. My PC does not detect the device anymore.

Here’s what I’ve observed:

When I disconnect the battery and plug the device into the PC, a green LED lights up.
When I reconnect the battery and then plug the device into the PC, the LED stays red.
Has anyone experienced a similar issue or have any suggestions on how to resolve it? Any help would be greatly appreciated!

Thanks in advance.

--- End quote ---

Can you still enter the bootloader mode ?
StalineShadow:
Hi,
Yes, I have access to the bootloader, but I need the firmware and I cannot find it on the manufacturer's website.
axantas:
Fnirsi does have an open WhatsApp chat. They are quite helpful there in case of problems. Sometimes, they even provide firmware-files there.

https://www.eevblog.com/forum/testgear/fnirsi-tc3/msg5459951/#msg5459951
kodlw:
During the upgrade, the new FW was loaded at 99% and the device stopped working. He couldn't even turn or connect to the computer.
Here's how to revive Fnirsi again:
- Connect to your computer
- Press the side button and hold the needle and hold (it is on the right side), pressing the menu and holding, pressing the power and hold. Then let go of the side button.
- Boot loader will show up on the display again
-upload firmware F2C23T-GW-en_v2.0.1.bin (462kb)
And it works again ... ♥  :-+

New Software 2.1.0 (8/2024) Hw V0.4 is on the page-  https://datoid.cz/MnKD71/f2c23t-gw-en-v2-1-0-bin
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