ott wrote on 2025-06-13, 15:41:

songoffall wrote on 2025-01-12, 07:20:

I'll do some investigating and try things out on my own card, and document the process here.

Any updates?
I want to backup EEPROM of Audigy 2ZS card using CH341A clip, but not sure about success.

I restored my 2zs. I desoldered the chip, flashed it on the T48 programmer. The firmware (worked) for 2zs is on the retroweb website

ott wrote on 2025-06-13, 15:41:

songoffall wrote on 2025-01-12, 07:20:

I'll do some investigating and try things out on my own card, and document the process here.

Any updates?
I want to backup EEPROM of Audigy 2ZS card using CH341A clip, but not sure about success.

Apparently my card's EEPROM was doing just fine, which is both a good thing and a bad thing - I really wanted to play around with flashing it. The real problem was - apparently you need the driver CD for your exact card model (mine being the original Audigy 2 SB0240). Took me a while to get the original driver CD.

I think it's understandable, my unwillingness to risk harming a working card by taking off a working EEPROM chip. But once I get my hands on a dead one with erased EEPROM, I'll see what comes out of it.

songoffall wrote on 2025-01-11, 10:10:

ROM files, part 1

download/file.php?id=232817
Audigy 2 value SB0400
&
Audidgy 4 SB0610

jmarsh wrote on 2025-01-11, 17:51:

myne wrote on 2025-01-11, 17:36:

It's an Soic8. At face value I don't see why a standard ch341a clip wouldn't work

(ie no need to desolder)

Just because it's the same pin layout, doesn't mean the pin functions match (they don't). You would need a custom intermediate board between the programmer and the clip to remap them.

I had no issues at all with an SB32 (ct3670), which had the same issue. The nasty thing is, that I had to desolder the chip, because the programmer was not able to power half of the card with 5V. But after resoldering, the card worked like a charm.

After reading that thread however, I have a bad feelingy that I will have to do it again some day. I have to check, which chip they used.

ElTentakel wrote on Yesterday, 17:01:

jmarsh wrote on 2025-01-11, 17:51:

myne wrote on 2025-01-11, 17:36:

It's an Soic8. At face value I don't see why a standard ch341a clip wouldn't work

(ie no need to desolder)

Just because it's the same pin layout, doesn't mean the pin functions match (they don't). You would need a custom intermediate board between the programmer and the clip to remap them.

I had no issues at all with an SB32 (ct3670), which had the same issue. The nasty thing is, that I had to desolder the chip, because the programmer was not able to power half of the card with 5V. But after resoldering, the card worked like a charm.

After reading that thread however, I have a bad feelingy that I will have to do it again some day. I have to check, which chip they used.

Some 24 chips and all 93 support write protect pin& functionality
With the x-fi its working like a charm
For x-fi just need to replace one resistor 😀