Electronics > Microcontrollers

Dim OLED Screen replacement for Agilent Keysight U1253A U1253B U1273A U1273AX

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Fallenrecruit:
Well the new SSD1309 screen arrived and got it swapped out, It looks great but ill have to say the firmware modification is a bit beyond me would it be too much to ask for some more help?

DavidAlfa:
First of all we need to find some programming software to make sure we can unbrick it.

Maybe this:
https://github.com/danielnilsson9/78k0r-pgm

serco:
Hello everyone,

I’m new to programming microcontrollers and could really use your guidance to ensure I’m doing everything correctly. I’ve recently soldered a screen to my multimeter, and I’m seeing the expected mirrored image. Before I proceed with programming, I want to double-check my plan since this is my first time attempting this.

Here’s what I’ve planned so far:
1. Install the PL23XX_Prolific driver.
2. Connect a USB 2.0 to TTL UART adapter to Multimetr
3. Pull FLMD0 to 3.3V to activate programming mode.
4. Run the utility U1253B_Firmware_Update_Software_V304. Do I need any additional software to program the multimeter, or is it sufficient to just launch this utility?
The multimeter will remain powered off throughout the process.

Does this setup look correct?
Thank you in advance for your help!

Per Hansson:
You can skip step 3: it is only necessary if you brick the meter and it will not accept a firmware update.
When the meter works it is just a "normal" firmware update with the only caveat that you have to use the update tools listed since the newer ones check that the firmware is original before flashing...
So it can also be flashed via IR if you have the adapter for it...

serco:
Thanks for your reply.
Do I really need to install PL23XX_Prolific driver for my USB-to-UART converter?

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