The following files and folders have been uploaded to the Files area of the [email protected] group.

• /QY100_1.37.zip

By: Eric <erichemingway@...>

Description:
QY100 Firmware 1.37

开云体育

Strange, my QY100 shows firmware 1.38…

I believe I have a one of those as well… It’s just that Yamaha only released 1.37 publicly… version 1.38 just was never released, but was installed if they were manufactured very late in the cycle… maybe it just had something to do with an alternate (minor) chip being used on the very last production run… but that’s a total guess… More likely, they just stop making it and they didn’t invest the resources to put that last firmware update out publicly.
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“The longest journey starts with the first step." ?- Lao Tzu

Yeah, I also have one like that.? Interesting thought, Eric.? Any idea how we might be able to read the firmware, and/or back it up?

开云体育

H i all

Yamaha Service manual refers to IC8 on page 4, as the ROM program 16M (bits) schematics (page 45/50) mentioned DIP 42 pins.Part list table mentioned XT344E00 as Main 341NV030 OTP 16M. I need tio open my QY70 to inspect the PCBs and locate IC8 to take picture and check it if it is on a socket (unlikely). Desoldering it to dump the ROM is usually a tricky exercise.

Best regards

Brahim @ Singapore

That would be extremely cool if it was in a socket and dumpable… perhaps someone incredibly industrious could make an alternate firmware !
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“The longest journey starts with the first step." ?- Lao Tzu