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Author Topic: Firmware versions for Studer A807 ....  (Read 9826 times)

Offline yo9frj

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Firmware versions for Studer A807 ....
« on: July 25, 2013, 01:08:39 PM »
Hello all, just got in my R2R collection a nice 1/4" Studer A807 0.75 VU with firmware version 3088. I'm in full process of recaping before a proper allignment. Does it make any sense to update the firmware to a newer version? Please advice - thanks for any help!
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Adrian A
Studer A807 0.75 VU, PR99MkII, PR99, B77, A77, Teac V-6030S tape deck, ELECTROCOMPANIET CLASSIC LINE: EMC1UP cd player, ECD2 192kHz/24bit DAC, EC4.8 preamp, 2 x AW180 power amp monoblocks, Nordic Tone speakers

Offline Ki Choi

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Re: Firmware versions for Studer A807 ....
« Reply #1 on: November 19, 2013, 01:31:53 PM »
it's an old question... and sorry no one had responded to you yet.

If you don't have any transport issue with your 30/88 firmware, I wouldn't bother updating it.

There are newer versions for Mk I and Mk II:

1.727.351.25 IC14 10/89 27128 8C45 MKI 1.727.350.25
1.727.351.25 IC15 10/89 27128 824B MKI 1.727.350.25
1.727.651.26 IC14 20/92 27256 E79A MKII 1.727.650.26

However, considering the Studer firmware developers did their last significant work in 1988, I would guess the 89 version would include only trivial changes.  Even for Studer A810, most experts consider 01/88 version to be more stable than the later 25/91.

Ki
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Ki Choi

Offline steve00021

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Re: Firmware versions for Studer A807 ....
« Reply #2 on: January 15, 2014, 03:08:42 PM »
Hi

I have 2 A807 MkI's and have just acquired a MKII, The software version is 15/90, the machine has developed a fault on start up where the display shows 15/90, stops at that, and both vu meters go hard over and the 3 over Db leds light up on both channels.
That is as far as it gets, i removed the eprom and tested in my eprom programmer &  it reads back with error. I have new eprom chips but unfortunately no .bin file to flash with, can anyone help me? I would love to get this recorder going again.

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Offline Ki Choi

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Re: Firmware versions for Studer A807 ....
« Reply #3 on: February 05, 2014, 12:11:13 AM »
You need the 1.717.651.26 chip.  It is IC14.

Send me an email if you can't locate the BIN file.

Ki
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Ki Choi

Offline yo9frj

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Re: Firmware versions for Studer A807 ....
« Reply #4 on: March 11, 2014, 08:06:50 AM »
Hello Ki, thanks for answer!

Well, since my initial post, I've put on hold the firmare issue.

However, I have a newer version of the A807's transport board, sn 1.727.340.24-V. Is that a plug & play board for my MkI 3088 version machine? Not sure I want to risk to test it and see new issues ...

Thanks in advance for any advice.
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Adrian A
Studer A807 0.75 VU, PR99MkII, PR99, B77, A77, Teac V-6030S tape deck, ELECTROCOMPANIET CLASSIC LINE: EMC1UP cd player, ECD2 192kHz/24bit DAC, EC4.8 preamp, 2 x AW180 power amp monoblocks, Nordic Tone speakers

Offline dmnieto

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Re: Firmware versions for Studer A807 ....
« Reply #5 on: August 31, 2015, 02:41:22 PM »
Hi Ki,

I am in the hunt for the BIN files for the a807 MK1 (30.88 and 40.87), do you have them?

Quote from: Ki Choi on February 05, 2014, 12:11:13 AM
You need the 1.717.651.26 chip.  It is IC14.

Send me an email if you can't locate the BIN file.

Ki
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