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fzabkar
 Post subject: Re: Can someone identify the ROM F/W Version of this FBLite
PostPosted: November 17th, 2019, 17:26 
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mhp666 wrote:
Tomorrow I will try to find a recognizable pattern.

Maybe this will help?

http://forum.hddguru.com/viewtopic.php?f=24&t=37795

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mhp666
 Post subject: Re: Can someone identify the ROM F/W Version of this FBLite
PostPosted: November 17th, 2019, 19:17 
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A first hypothesis.
1C0-1C3 HEADER
1C4-1C7 HEAD 00
1C8-1CB HEAD 01
1CC-1CF HEAD 02
1D0-1D3 HEAD 03
1D4-1D7 HEAD 00
1D8-1DB HEAD 01
1DC-1DF HEAD 02
1E0-1E3 HEAD 03
Of the 4-byte groups the most important are the last 2.
In this way, if we erase the adapters of heads 1,2 and 3, the hdd starts, if we erase 0, 2 and 3 the HDD starts but it takes longer, Read the second copy.

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mhp666
 Post subject: Re: Can someone identify the ROM F/W Version of this FBLite
PostPosted: November 17th, 2019, 19:21 
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fzabkar wrote:
mhp666 wrote:
Tomorrow I will try to find a recognizable pattern.

Maybe this will help?

http://forum.hddguru.com/viewtopic.php?f=24&t=37795


I pass some more information
With this 4F the HDD starts perfectly.

Thanks, as always. I will look forward to your comments.


Attachments:
4F.rar [17.05 KiB]
Downloaded 366 times

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fzabkar
 Post subject: Re: Can someone identify the ROM F/W Version of this FBLite
PostPosted: November 17th, 2019, 20:58 
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pepe wrote:
i do know precisely which params make the mess and what they are used for. That's what makes the recovery process a lot faster than simple trial and error - right as you wrote.

Has anyone tried to replace the heads and import the donor's head adaptives? Does that have any chance of working, assuming that the donor's adaptives on their own don't work?

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pcimage
 Post subject: Re: Can someone identify the ROM F/W Version of this FBLite
PostPosted: November 20th, 2019, 3:31 
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pepe wrote:
you may search for whatever you want in the sa, without 4F you won't find what you need.

to Sean: it is not by trial and error. It is a well defined process.

pepe


Peter,

What I actually meant by “trial and error” was that research into searching for the solution to the “4F problem” is trial and error.

By definition, research is “trial and error”.... you “trial” some ideas which produce “error” until it works and thus produce a “solution”.

I don’t doubt your “process” is well defined, that wasn’t what I was getting at!

Sorry if I didn’t make myself clear :-)

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pepe
 Post subject: Re: Can someone identify the ROM F/W Version of this FBLite
PostPosted: November 20th, 2019, 5:04 
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:)

np. I just meant it is not just about brainlessly trying different values like a bruteforce attack.

pepe

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pcimage
 Post subject: Re: Can someone identify the ROM F/W Version of this FBLite
PostPosted: November 20th, 2019, 15:02 
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pepe wrote:
:)

np. I just meant it is not just about brainlessly trying different values like a bruteforce attack.

pepe


Yep, I wasted a good few hours doing exactly that! :-)

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Jirbun
 Post subject: Re: Can someone identify the ROM F/W Version of this FBLite
PostPosted: November 28th, 2019, 18:39 
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Has anyone understand the differences between head adaptive stored in rom module 4f and the 47 which is called microjogs ?
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pepe
 Post subject: Re: Can someone identify the ROM F/W Version of this FBLite
PostPosted: November 28th, 2019, 19:11 
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of course...

pepe

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Jirbun
 Post subject: Re: Can someone identify the ROM F/W Version of this FBLite
PostPosted: November 28th, 2019, 20:49 
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The 47 adaptive described here
http://www.hddoracle.com/viewtopic.php?f=3&t=24#p1721
And for 4F we will find explanations later .
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Nick_CT
 Post subject: Re: Can someone identify the ROM F/W Version of this FBLite
PostPosted: November 29th, 2019, 6:13 
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pcimage wrote:
pepe wrote:
:)

np. I just meant it is not just about brainlessly trying different values like a bruteforce attack.

pepe


Yep, I wasted a good few hours doing exactly that! :-)


I tried about 30 different well matched donor ROMs on this, none worked as you guys said, but wanted to waste some of my own time too :)

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