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St310014ace Unlocking Tutorial (written In German)


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#16 cyd0g

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Posted 07 December 2005 - 01:23 PM

@ headbangerte

the adapter you can use on every seagate harddisk

but the parameters for unlocking are different on every seaga model



#17 Code-Runner

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Posted 08 December 2005 - 05:49 AM

Hi cyd0g

Sorry but I just got around to really looking this over.

I know that the (TI) MAX232N is designed to be compatible with the Maxim MAX232 interface and the TI IC allows the grounding of V+ (Pin 2) but the recommendation of the Maxim IC is to use pin 2 as a doubler. Being that the TI chip is to be interchangeable with the Maxim, would you see a possible strain on data transfer or just a reduction of speed?

I also know that the recommendation for the capacitor is 1uF with only the Maxim MAX232A seeking a 0.1 uF cap, would you foresee any issues with that?

The reason I ask is that currently I am using the PC3000 with the Fairchild MM74HC14N board with the 6 pin Seagate adapter designed for use with the PC3000 ISA or PCI boards and I'm thinking about creating a SMT board based off your supplied illustrations but with a few modifications.



#18 fr_dr

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Posted 08 December 2005 - 06:43 AM

When i come to the part that i have to plug the power cable in the hdd, i get all the info about the hdd and rom version but i'm not able to get a command promt with t>. I tried alt+z, shift+z, altctrl+z and ctrl+z (cause i wasnt shure what strg mean in english biggrin.gif ) and nothing get me to the t> prompt.

I first tried it in Win98 first (cause you say in the tut to get win98/nt/me, so i assumed that this probably don't work in xp) and after in WinXP both with no result. Is it supposed to work in XP too?

Does anyone know what i'm doing wrong?

#19 cyd0g

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Posted 08 December 2005 - 09:58 AM

@code runner

sorry code runner, iīm not an electronics engineer .

found the the schematic on the net and just build it.

it works, but donīt ask me how rolleyes.gif

@fr_dr

strg + Z = ctrl + Z oder ctrl + Y (english/german keybord Y & Z is replaced)

yes, it works with windows XP

first press ctrl and then Z or Y


regards

Edited by cyd0g, 08 December 2005 - 10:06 AM.


#20 Speckles

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Posted 08 December 2005 - 02:51 PM

QUOTE
@ headbangerte

the adapter you can use on every seagate harddisk

but the parameters for unlocking are different on every seaga model





Does anybody have the codes for different model seagate drives like the ST3160021A as my 160 gig drive is locked and my board is stuffed.




#21 cyd0g

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Posted 08 December 2005 - 03:08 PM

nobody will tell you the paramters.

because the parameters are the secrets

of recovery companies, they make money

with that knowledge.


#22 hippo

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Posted 08 December 2005 - 08:19 PM

QUOTE
strg + Z = ctrl + Z oder ctrl + Y (english/german keybord Y & Z is replaced)



Thanks for this info I'm gonna try coding a pic 12c508 to do this simple comms without hyperterm and I needed this info. Maybe I'll bang this out today.

#23 Code-Runner

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Posted 08 December 2005 - 08:53 PM

QUOTE(hippo @ Dec 8 2005, 01:26 PM) View Post

Thanks for this info I'm gonna try coding a pic 12c508 to do this simple comms without hyperterm and I needed this info. Maybe I'll bang this out today.


That sounds good, let us know how it goes. Also couldn't you use a P89LPC932 (Can be bumped up to the 5V range) to make it flashable so if other parameters are found or reviled then the package can be altered for a different drive?



#24 cyd0g

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Posted 10 December 2005 - 08:01 AM

iīm interested in the success rate of this project.

who has unlocked the drive with this tutorial ?

i unlocked 5 drives so far, all are working.

cheers beerchug.gif

#25 orakle

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Posted 10 December 2005 - 05:13 PM

Amazing work cyd0g! I've got one of these drives here that I'm going to try and unlock with your method as soon as my exams are done smile.gif

Mods, can we get a sticky for this? Or maybe a link from the "essential guides" thread?

#26 fr_dr

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Posted 10 December 2005 - 11:18 PM

I wasnt able to unlock it. sad.gif

Like i said previously, i can get to the point that i see all the info about the hdd in HyperTerminal, but i'm not able to get the t> prompt. Each time i press ctrl+y or +z, it return an ascii character, each time different, it's pretty weird (actually i get same result with any key). Do u think i need to check my solder, or can i assumed that my device is ok because it can upload hdd current ver and firmware?

PS i added a led and a 150ohm resistor between 5v and grnd so i can know theres power, can it alter the data in any way and be the cause of my problems?

Edited by fr_dr, 10 December 2005 - 11:21 PM.


#27 cyd0g

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Posted 10 December 2005 - 11:49 PM

i think there is someting wrong with TxD (Tx) on your adapter,

try to type in "." (just press the full stop key on your keyboard

without the brackets )

you should see somthing like this.

Pgm=50 Trk=00009C(00009C).0.160 Zn=1 Err=00 ErCt=0000 Hlth=0000 CHlth=0000 Ready

if you donīt get a status message like this, you canīt send data to the harddisk.

check TxD and try again.

smile.gif

btw, Rx seems to work because you get "ROM verison message"

Edited by cyd0g, 11 December 2005 - 12:33 AM.


#28 cyd0g

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Posted 12 December 2005 - 03:08 PM

*push*

#29 Code-Runner

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Posted 12 December 2005 - 06:31 PM

I have been designing a SMT board and cable set for this, after I get the prototypes in I will post a pick.

Now I would love to track down some more paramters to make the board worth while...

#30 cyd0g

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Posted 12 December 2005 - 08:03 PM

Here is a list of ALL commands you can type into the terminal.

http://www.mytempdir.com/315990

Be carefull ! You can KILL your harddisk.

I allready killed 3 ACE drives during development of the tutorial.

Would like to some photos @ coderunner rolleyes.gif




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