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T22 Error 0175/Bad CRC1. Looking for an eeprom dump.

T20-T23 Series and T30 specific matters only. NOT for T25-Retro.
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Bronet
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T22 Error 0175/Bad CRC1. Looking for an eeprom dump.

#1 Post by Bronet » Fri Dec 15, 2017 7:15 pm

In the last months I've been searching all over internet for an uncorrupted T22 eeprom with no success.

I was wondering if anyone of you have it somewhere on your hard drive and upload it
Or give me some light on how to fix my current eeprom

Thanks.

rkawakami
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Re: T22 Error 0175/Bad CRC1. Looking for an eeprom dump.

#2 Post by rkawakami » Fri Dec 15, 2017 8:34 pm

Welcome to thinkpads.com!

Am I to assume that you have a way of re-programming the EEPROM while it's still in circuit, or are you attempting to do this with it removed from the motherboard?
Ray Kawakami
X22 X24 X31 X41 X41T X60 X60s X61 X61s X200 X200s X300 X301 Z60m Z61t Z61p 560 560Z 600 600E 600X T21 T22 T23 T41 T60p T410 T420 T520 W500 W520 R50 A21p A22p A31 A31p
NOTE: All links to PC-Doctor software hosted by me are dead. Files removed 8/28/12 by manufacturer's demand.

Bronet
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Re: T22 Error 0175/Bad CRC1. Looking for an eeprom dump.

#3 Post by Bronet » Sat Dec 16, 2017 8:00 am

rkawakami wrote:
Fri Dec 15, 2017 8:34 pm
Welcome to thinkpads.com!

Am I to assume that you have a way of re-programming the EEPROM while it's still in circuit, or are you attempting to do this with it removed from the motherboard?
Thanks

Right now I'm using a ghetto SIPROG to dump and write on the eeprom
I've tried to edit my current eeprom by comparing with an uncorrupted eeprom from a Thinkpad A21 but with no success

theterminator93
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Re: T22 Error 0175/Bad CRC1. Looking for an eeprom dump.

#4 Post by theterminator93 » Sat Dec 16, 2017 10:33 am

Worst case scenario you can look up Victor at allservice. I sent in the CRC1 corrupted EEPROM dump of my TransNote to him and he fixed it and sent it back to me. IIRC it was $30.
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Re: T22 Error 0175/Bad CRC1. Looking for an eeprom dump.

#5 Post by rkawakami » Sun Dec 17, 2017 4:37 am

Bronet wrote:
Sat Dec 16, 2017 8:00 am
I've tried to edit my current eeprom by comparing with an uncorrupted eeprom from a Thinkpad A21 but with no success
If you truly tried to use an A21 EEPROM dump to revive your T22, then I think that's your problem. I believe that the systems are too different to share BIOS firmware. If on the other hand you meant a T21 image, then I think it's the same issue; BIOS may be incompatible. This is based upon there being different BIOS updates for these 3 systems.

I'll try to look around my home office tomorrow to see if I can find one of my T22 systems. If it still boots, I can get an image off of it that should be able to fix your 0175 error. I've done several such repairs over the years. The method I used is (somewhat) based on what theterminator93 mentioned, requires a US$30 software licensing fee to Victor, some hardware to be built (about US$15 to $20) and another computer that has a serial port. I'll contact you via Private Messages (PM) if I'm able to extract a good T22 image with complete details on how the restoration works.

Please note however that T22 systems are known to be prone to getting the 0175 error. There's no guarantee that your system will not get this error sometime in the future. But if it does, then you'll have a solution that will fix the problem.
Ray Kawakami
X22 X24 X31 X41 X41T X60 X60s X61 X61s X200 X200s X300 X301 Z60m Z61t Z61p 560 560Z 600 600E 600X T21 T22 T23 T41 T60p T410 T420 T520 W500 W520 R50 A21p A22p A31 A31p
NOTE: All links to PC-Doctor software hosted by me are dead. Files removed 8/28/12 by manufacturer's demand.

Bronet
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Re: T22 Error 0175/Bad CRC1. Looking for an eeprom dump.

#6 Post by Bronet » Sun Dec 17, 2017 1:45 pm

theterminator93 wrote:
Sat Dec 16, 2017 10:33 am
Worst case scenario you can look up Victor at allservice. I sent in the CRC1 corrupted EEPROM dump of my TransNote to him and he fixed it and sent it back to me. IIRC it was $30.
I wouldn't mind doing that, but the price seems a bit too high for me.
rkawakami wrote:
Sun Dec 17, 2017 4:37 am
If you truly tried to use an A21 EEPROM dump to revive your T22, then I think that's your problem. I believe that the systems are too different to share BIOS firmware. If on the other hand you meant a T21 image, then I think it's the same issue; BIOS may be incompatible. This is based upon there being different BIOS updates for these 3 systems.

I'll try to look around my home office tomorrow to see if I can find one of my T22 systems. If it still boots, I can get an image off of it that should be able to fix your 0175 error. I've done several such repairs over the years. The method I used is (somewhat) based on what theterminator93 mentioned, requires a US$30 software licensing fee to Victor, some hardware to be built (about US$15 to $20) and another computer that has a serial port. I'll contact you via Private Messages (PM) if I'm able to extract a good T22 image with complete details on how the restoration works.

Please note however that T22 systems are known to be prone to getting the 0175 error. There's no guarantee that your system will not get this error sometime in the future. But if it does, then you'll have a solution that will fix the problem.
Thank you, I would love that. :D
I don't get it why theres no eeprom dumps available online, so people can save their old thinkpads for free.

This T22 I have was about to go to the trash by the previous owner, so I took it in, hoping I could revive it with an uncorrupted eeprom.

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Re: T22 Error 0175/Bad CRC1. Looking for an eeprom dump.

#7 Post by rkawakami » Thu Dec 21, 2017 3:51 am

@Bronet: Private Message (PM) has been sent to you!
Ray Kawakami
X22 X24 X31 X41 X41T X60 X60s X61 X61s X200 X200s X300 X301 Z60m Z61t Z61p 560 560Z 600 600E 600X T21 T22 T23 T41 T60p T410 T420 T520 W500 W520 R50 A21p A22p A31 A31p
NOTE: All links to PC-Doctor software hosted by me are dead. Files removed 8/28/12 by manufacturer's demand.

BloCkOut
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Re: T22 Error 0175/Bad CRC1. Looking for an eeprom dump.

#8 Post by BloCkOut » Tue May 22, 2018 11:56 am

i have a T22
but i dont have any eeprom reading tools, nor knowledge.

isnt there a DOS program that can read the eeprom and make a backup to the c: drive for you?

psfales
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Re: T22 Error 0175/Bad CRC1. Looking for an eeprom dump.

#9 Post by psfales » Tue Oct 30, 2018 2:28 pm

My T22 will not boot (appears to be a dead motherboard). I found a cheap replacement on eBay, but it has 0175/Bad CRC1 error.

I'm contemplating unsoldering the EEPROM from the dead motherboard and putting it in the new system. (at least *attempting* to do so)

But before I do that, I thought I would explore alternatives. For example, could someone read out the contents of the EEPROM if it's in a dead motherboard? Or read it directly from the chip if it's removed from the board?

This thread is a year or so old, so maybe it's old news, but I thought I would check and see if the topic is still of any interest

moriel5
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Re: T22 Error 0175/Bad CRC1. Looking for an eeprom dump.

#10 Post by moriel5 » Sun Jan 27, 2019 7:07 pm

I have a T22 which I got from my employer (it was his old laptop back in the day), which is running spectacularly.
I'll try finding out how to back up the EEPROM from WinFLP, since I do not have enough RAM for Lubuntu (and hence, FlashROM).
Is the EEPROM the BIOS, or something else?

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Re: T22 Error 0175/Bad CRC1. Looking for an eeprom dump.

#11 Post by theterminator93 » Sun Jan 27, 2019 10:41 pm

It's the EEPROM dump from the security chip, the Atmel 24RF08.
Daily: T25 | W520 i7-2860QM·Quadro 2000m·IPS FHD | T420 i7·NVS·IPS FHD | X220 i7·IPS FHD | T601F T9900·NVS·LED UXGA
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Re: T22 Error 0175/Bad CRC1. Looking for an eeprom dump.

#12 Post by RealBlackStuff » Mon Jan 28, 2019 7:09 am

Take out the power, battery and ethernet/modem-card.
Attach only power, try to boot.
If no error, that card was the cause, replace it.
If still error, remove power and also the CMOS battery and RAM.
[Put the keyboard back in and] hold the Power button down for 20 seconds.
Attach only power, try to boot.
It should beep 1-3-3-1 for having no RAM.
If not, your mobo is most likely toast.
If yes, remove power, insert RAM and (a preferably fresh) CMOS battery.
Insert power and try to boot again.
You'll get an error for Date/Time, which needs to be reset in BIOS.

If still Error 175, try to (re)flash the BIOS.
Download the non-diskette version from Drivers link above, burn a CD.
Try to update the BIOS, press F12 if needed to select drive at bootup.
Any luck?

If you load the Atmel dump from another T22, you'll get the wrong Type and S/N, plus a chance for someone else's supervisor password and possibly a tamper-warning.
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Re: T22 Error 0175/Bad CRC1. Looking for an eeprom dump.

#13 Post by moriel5 » Mon Jan 28, 2019 6:31 pm

theterminator93 wrote:
Sun Jan 27, 2019 10:41 pm
It's the EEPROM dump from the security chip, the Atmel 24RF08.
Thanks, in that case I can use my CH341A programmer.
RealBlackStuff wrote:
Mon Jan 28, 2019 7:09 am
If you load the Atmel dump from another T22, you'll get the wrong Type and S/N, plus a chance for someone else's supervisor password and possibly a tamper-warning.
Thanks for the warning, though there is no supervisor password on mine.
As to the type, mine is Type 2647, and I see no need for the S/N, so long after these have been released.

Can't we modify the dump to match the OP's hardware?

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Re: T22 Error 0175/Bad CRC1. Looking for an eeprom dump.

#14 Post by RealBlackStuff » Mon Jan 28, 2019 9:41 pm

I think I mixed up moriel5's problem, thought he had error 0175.

If you load someone else's EEPROM, that other EEPROM might have a password!

And virtually every T20/T21/T22/T23 was Type 2647.
A few also did have Type 2648, but they are identical otherwise.

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Re: T22 Error 0175/Bad CRC1. Looking for an eeprom dump.

#15 Post by moriel5 » Tue Jan 29, 2019 3:29 pm

RealBlackStuff wrote:
Mon Jan 28, 2019 9:41 pm
I think I mixed up moriel5's problem, thought he had error 0175.

If you load someone else's EEPROM, that other EEPROM might have a password!

And virtually every T20/T21/T22/T23 was Type 2647.
A few also did have Type 2648, but they are identical otherwise.
I think you mean the OPs problem?
Since I am not having any issues whatsoever, and I know for certain that I have no password saved (I had even disabled some of the security settings in the BIOS, such as IBM's preboot environment).
Last edited by moriel5 on Tue Jan 29, 2019 6:13 pm, edited 1 time in total.

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Re: T22 Error 0175/Bad CRC1. Looking for an eeprom dump.

#16 Post by RealBlackStuff » Tue Jan 29, 2019 4:10 pm

You got PM.

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