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Does anybody have the RADIAS SYNTH ROM binaries?

 
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Master_E



Joined: 18 Dec 2019
Posts: 10

PostPosted: Mon Jan 06, 2020 5:56 am    Post subject: Does anybody have the RADIAS SYNTH ROM binaries? Reply with quote

I've had my RADIAS-R for what's likely been over a decade, and as of these past few years it's been getting that dreaded "SYNTH ROM checksum" error 9 times out of 10 boots.

I've taken it to a registered KORG repair center, and their diagnosis is that the flash memory has temperature-based reliability issues, meaning eventually the chip itself will stop working one of these days.

After buying the service manual, I've sourced the flash memory used in the RADIAS, but that's it. The repair center says KORG doesn't have system files for devices as old as the RADIAS (despite what they say), and that the only way I would be able to fix my RADIAS is if I were to cannibalize a working system or to somehow acquire a binary of the SYNTH ROM.

Short of buying all the various equipment needed and learning how to de-solder SMT parts all so that I can go through the hours and hours trying to get a good dump from a dying chip, I'm at my wits end.

This is the only place I know of that talks exclusively about the RADIAS (and isn't completely abandoned), so as a result this is the only place I can place my plea.

Should any one of you have a good dump of the SYNTH ROM binaries, would you please send a copy my way? I'm aware of the legal implications, but for how much time and money I've put in to repairing my one and only synthesizer, you can be rest assured that I won't distribute them to a single soul.

I know I'm not the only one with this issue. I just hope I'm also not the only one desperate enough to consider the only true route to fixing it.
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voip
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Joined: 27 Nov 2014
Posts: 3758

PostPosted: Mon Jan 06, 2020 11:16 am    Post subject: Reply with quote

Presumably, if the Radias comes up once out of 10 times, the flash memory will still contain valid data, so it might be possible to read and copy the data into a new flash memory device. The device supports the Common Flash Memory Interface, though protection may get in the way. The operation is not likely to be as straightforward as writing to an EPROM, and there is a chance that it may need factory commissioning software and accompanying hardware, which might be a simple serial interface.

There is a discussion about Radias checksum errors here:

http://www.korgforums.com/forum/phpbb2/viewtopic.php?p=317508

http://www.korgforums.com/forum/phpBB2/viewtopic.php?t=84631

Also here, mostly in Polish:

https://www.elektroda.pl/rtvforum/topic2643588.html

.
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Master_E



Joined: 18 Dec 2019
Posts: 10

PostPosted: Mon Jan 06, 2020 8:08 pm    Post subject: Reply with quote

Factory commissioning and accompanying hardware? What might that entail? I've sourced available stock of both the original S29JL032H70TFI020D and the more recent S29JL032J, so binaries should be binaries right?

Ohh... I sure hope someone out there has done the work before me.
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voip
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Joined: 27 Nov 2014
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PostPosted: Mon Jan 06, 2020 10:58 pm    Post subject: Reply with quote

The datasheet for the NOR flash part, details the so called Secured Silicon Region, which has numerous configuration options. This section is worth reading.

.
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Master_E



Joined: 18 Dec 2019
Posts: 10

PostPosted: Mon Jan 06, 2020 11:35 pm    Post subject: Reply with quote

All of this assuming I'm all on my own here and I get to dismounting the flash in the first place...

You sound like you know what you're talking about! Could you provide a dump if you find yourself opening up your RADIAS one day? Smile
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voip
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Joined: 27 Nov 2014
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PostPosted: Thu Jan 09, 2020 7:50 pm    Post subject: Reply with quote

Well, you never know ;-) I've no intention of opening it up, for now, at least, but the USR checksum does show an error, so that day may not be too long coming.

.
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Master_E



Joined: 18 Dec 2019
Posts: 10

PostPosted: Thu Jan 09, 2020 9:02 pm    Post subject: Reply with quote

Oh dude oh man you gotta hook a brotha up I will love you forever man you have no idea Shocked

I've spent far too long worrying over when the flash will die. Well, that and if the caps are eating through the board by now...
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iowagold
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Joined: 11 Nov 2013
Posts: 323
Location: in an alternate time line

PostPosted: Fri Jan 10, 2020 1:31 pm    Post subject: hummm how about just buying another unit? Reply with quote

hummm how about just buying another unit?
right now they are still out there..
yea you will have to spend a few bucks...
but spare units are always a good thing!!

unless you are like me and spend a million bucks to save 5 bucks!!
LOL!!

yea spending 20k in time for a 1000.00 unit just does not add up.
save the old unit..
spare parts like knobs etc.
_________________
my site klimaco.net
Current Gear: korg m3 expanded radias firewire 88 key Radias r on mat, korg radias r on mat on 61 key bed, Korg triton rack w 96mb ram scsi port, 5) korg RADIAS-R on big rack, korg kaossilator pro plus, 6) roland integra7, 4 Roland sc55, 2 roland sb55, 5) fostex 2016, behringer fx2000, 2) roland a800 pro, 2) roland a88 and 2) a49, roland juno, Doepfer MAQ 16/3, 2 Manikin Electronic Schrittmacher, most soft synths. cake walk all old and new versions.
3 schecter guitars, 3 elevenracks, most mxr effects, 2 zoom r24, avid pro tools 11.
MRT midi Breath Controller. 6 studio rooms.
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iowagold
Approved Merchant
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Joined: 11 Nov 2013
Posts: 323
Location: in an alternate time line

PostPosted: Fri Jan 10, 2020 1:32 pm    Post subject: hummm how about just buying another unit? Reply with quote

hummm how about just buying another unit?
right now they are still out there..
yea you will have to spend a few bucks...
but spare units are always a good thing!!

unless you are like me and spend a million bucks to save 5 bucks!!
LOL!!

yea spending 20k in time for a 1000.00 unit just does not add up.
save the old unit..
spare parts like knobs etc.
_________________
my site klimaco.net
Current Gear: korg m3 expanded radias firewire 88 key Radias r on mat, korg radias r on mat on 61 key bed, Korg triton rack w 96mb ram scsi port, 5) korg RADIAS-R on big rack, korg kaossilator pro plus, 6) roland integra7, 4 Roland sc55, 2 roland sb55, 5) fostex 2016, behringer fx2000, 2) roland a800 pro, 2) roland a88 and 2) a49, roland juno, Doepfer MAQ 16/3, 2 Manikin Electronic Schrittmacher, most soft synths. cake walk all old and new versions.
3 schecter guitars, 3 elevenracks, most mxr effects, 2 zoom r24, avid pro tools 11.
MRT midi Breath Controller. 6 studio rooms.
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Master_E



Joined: 18 Dec 2019
Posts: 10

PostPosted: Fri Jan 10, 2020 8:44 pm    Post subject: Reply with quote

Well, not only would it cost more buying a whole module just for one part as opposed to buying a chip and a programmer, but my RADIAS has lots of sentimental value to me. It was a gift from a family member I rarely see, and it's the only physical synth I have. It also worked as a gateway to teach me all sorts of synthesis knowledge, and as a result I've created many instruments on it that would work only with it.

As silly as it sounds, I want to keep it in working order as long as I can, perhaps even passing down should the fates allow.
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Silica



Joined: 05 May 2020
Posts: 3
Location: Los Angeles

PostPosted: Mon May 25, 2020 8:26 pm    Post subject: Reply with quote

I'm curious if you ever figured this out. Maybe you found this in your search:
https://www.reddit.com/r/synthesizers/comments/57cfte/offering_free_eprom_dumpingprogramming_for_your/
http://dbwbp.com/index.php/9-misc/37-synth-eprom-dumps

I'm not clear on exactly how it works, but it seems this guy is willing to extract ROMs if you send them to him in order to help people just like you and others.
Maybe get a working Radias from a place with a good return policy, extract the rom by sending it to this guy, and return the synth, or keep or sell it or whatever I suppose. There are also guides on how to do it yourself on his website.

Sorry if all this is stuff you probably already looked into and thought about. Good luck!
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Master_E



Joined: 18 Dec 2019
Posts: 10

PostPosted: Wed May 27, 2020 6:38 pm    Post subject: Reply with quote

Silica wrote:
I'm curious if you ever figured this out. Maybe you found this in your search. Sorry if all this is stuff you probably already looked into and thought about. Good luck!


Oh my! What intriguing resources! And if such a plan went off without a hitch, the whole "send it to this guy" idea doesn't sound half bad either.

Thanks for the tip!
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Silica



Joined: 05 May 2020
Posts: 3
Location: Los Angeles

PostPosted: Thu May 28, 2020 12:38 am    Post subject: Reply with quote

No problem! Even if you did have the money to just get another, it seems like a waste to just get rid of your current unit, especially since it's just a software problem. Plus it might just happen again with another one. We throw too much stuff away these days. Instruments that you love shouldn't be just become parts, scraps, or garbage. Besides, if you can get the ROM off with this guys help and it gets added to the library, you'll be helping other people who eventually run into the same problem. Also who know! We may see custom firmware in the future! The library he has so far looks pretty good, and based off the amount of support people have given him, it looks trustworthy. Please post your progress!
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