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 Post subject: Re: BAD_CTX Intel SSD Bug
PostPosted: July 6th, 2013, 8:44 
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Joined: February 4th, 2013, 15:36
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Location: Russia
Yeah, depends on case...
New version of the solution for intel ssd is coming soon. It is expected to work much more better. Will see...


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 Post subject: Re: BAD_CTX Intel SSD Bug
PostPosted: July 20th, 2013, 12:18 
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Joined: October 21st, 2005, 0:45
Posts: 1484
Location: Mexico
Yes that solution it doesnt works for all problems.


Im looking for solutions too if someone its interesting to RE inside code reach me by PM , im looking for people with the enough skills for the tasks!


This is what im talking about !

00005528 STR R0, [R4]
0000552C BL sub_4FD8
00005530 LDR R0, =0x4480030
00005534 LDR R4, =0x4002894
00005538 BL sub_584C
0000553C MOV R5, R0
00005540 TST R5, #0x10
00005544 BEQ loc_5504
00005548 B loc_54CC
00005548 ; ---------------------------------------------------------------------------
0000554C aWhatIsYourFavo DCB "What is your favorite color? Bring out your dead. HOOT.00",0
0000554C ; DATA XREF: sub_5420:loc_5460o
00005586 DCB 0
00005587 DCB 0
00005588 dword_5588 DCD 0x4480030 ; DATA XREF:
00005588 ;
0000558C ; ---------------------------------------------------------------------------
0000558C LDR R1, =0x4002314
00005590 LDRB R0, [R1,#0x50]
00005594 SUBS R0, R0, #1
00005598 BCC loc_55AC
0000559C BEQ loc_55C0

Another piece of code

loc_19D8 ; CODE XREF: sub_13B8+610j
000019D8 CMP R10, #1
000019DC BNE loc_19F8
000019E0 LDR R0, =0xDEADBEEF
000019E4 CMP R1, R0
000019E8


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 Post subject: Re: BAD_CTX Intel SSD Bug
PostPosted: July 20th, 2013, 23:04 
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Joined: December 4th, 2012, 1:35
Posts: 2914
Location: Adelaide, Australia
What is it just ARM code? What are you RE'ing the firmware to solve this bug?


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 Post subject: Re: BAD_CTX Intel SSD Bug
PostPosted: July 21st, 2013, 4:41 
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Joined: May 5th, 2004, 20:06
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Location: England
At least it looks correct...which is a start :)

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 Post subject: Re: BAD_CTX Intel SSD Bug
PostPosted: July 21st, 2013, 11:51 
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Joined: February 4th, 2013, 15:36
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ACE released new beta with updated solution for intel ssd last week. I've tried it, works very good! Did you try it? Or you have some unusual case? Anyway i advice you to ask for help ACE tech support. I'm sure ACE has a lot of tips and tricks.
I think you waste your time if you want to find solution for you case. But if you are RE'ing intel ssd just for fun, then i wish you good luck! =) RE is very interesting job, enjoy :wink:


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 Post subject: Re: BAD_CTX Intel SSD Bug
PostPosted: July 22nd, 2013, 12:56 
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Joined: October 24th, 2009, 15:22
Posts: 513
Location: Poland
Yeah... Ace makes beta updates, but only for RU users. Rest of the world must wait :/

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 Post subject: Re: BAD_CTX Intel SSD Bug
PostPosted: July 22nd, 2013, 13:03 
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Joined: July 21st, 2010, 5:03
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Location: Norfolk, UK
arvika wrote:
Yeah... Ace makes beta updates, but only for RU users. Rest of the world must wait :/


Not necessarily........ :mrgreen:

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 Post subject: Re: BAD_CTX Intel SSD Bug
PostPosted: July 22nd, 2013, 13:11 
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bubaleh wrote:
ACE released new beta with updated solution for intel ssd last week. I've tried it, works very good!

Could you be more specific?

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 Post subject: Re: BAD_CTX Intel SSD Bug
PostPosted: July 23rd, 2013, 3:37 
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Dont know how about other beta's.. But ACE was looking for the beta testers for intel ssd solution. So if you want to get this beta, just ask tech support about it.


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 Post subject: Re: BAD_CTX Intel SSD Bug
PostPosted: July 23rd, 2013, 3:56 
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Joined: February 4th, 2013, 15:36
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to Doomer
this beta allow you to recover data from intel 320 ssd with bad-ctx issue. It is the second version of this solution. Previous version works too, but usually you got only partial access to user data. It depends on case. Sometime you can extract 95% of data, sometimes 30%. New version of the solution use manual analysis of the translators strucures of the drive and usually allow you to recover about 90-95% of the user data.


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 Post subject: Re: BAD_CTX Intel SSD Bug
PostPosted: July 23rd, 2013, 9:08 
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In my experience to analyze translator structures, you need to get to translator structures first and they are not always easily obtainable
Also BAD_CTX issue is not one issue it's a group of issues. Some error codes more severe than others
I wonder if the utility was tested on 12x and 15x codes and if it was then what is the %% of recovered data with those codes

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 Post subject: Re: BAD_CTX Intel SSD Bug
PostPosted: July 23rd, 2013, 9:17 
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Joined: August 18th, 2010, 17:35
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Location: Massachusetts, USA
Just got some help from Ace with a BAD_CTX 00000130 and recovered 95% of the data. Some files had bad sectors.

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 Post subject: Re: BAD_CTX Intel SSD Bug
PostPosted: July 23rd, 2013, 9:57 
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Location: Chicago
13x codes are most common and most easiest ones
Would be really nice to hear about other codes
If anybody has experience - please share

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 Post subject: Re: BAD_CTX Intel SSD Bug
PostPosted: July 23rd, 2013, 10:48 
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Tested on bad_ctx 15A, worked very good! Just some files were damaged. Recovered about 90-95% of user data.


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 Post subject: Re: BAD_CTX Intel SSD Bug
PostPosted: July 23rd, 2013, 11:00 
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Joined: September 29th, 2005, 12:02
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Location: Chicago
Thank you

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 Post subject: Re: BAD_CTX Intel SSD Bug
PostPosted: October 5th, 2013, 16:33 
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Joined: September 25th, 2013, 21:11
Posts: 8
Location: United States
Yes it can be done, and it's an old issue that's been solved for all the variations including NO-CONTEXT errors where the FTL tables are missing altogether.

It's been resolved for almost 1 year now, without the need for ACE/Deepspar hardware.

Since I got flamed for making the same claim about WD smartware in another thread, i'll just leave it at that for now.

If you want more details you can message me.

Thanks,

Tyr


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 Post subject: Re: BAD_CTX Intel SSD Bug
PostPosted: October 7th, 2013, 6:56 
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Joined: September 25th, 2013, 21:11
Posts: 8
Location: United States
To those that have sent me pms. I'm sorry but it seems I can't respond for some reason on a new account. I don't remember the credentials on my old account so I won't be able to send pm replies.

In general for my own business I use ACE hsrdwsre software solutions, but I have used anither company as reseller for a couple of years for intel ssd and other recoveries I can't do.

Aparently they produce their own imaging boards and software. Some odd looking multichip reader using daughter boards for ssd rebuild work.

I've asked them if they are willing to sell their hardware at leasy 3 different times, but they won't budge. Next partner open house I will try to get pictures of it from their display. :)

Also apparently, these probls with 320 series were a rsultbof bad architecture choice of basocally just translplanting previous generation controller that could not properly keep up with demands of smaller NAND die process.

Sorry for typos. I am using phone.

Thanks

Tyr


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 Post subject: Re: BAD_CTX Intel SSD Bug
PostPosted: October 7th, 2013, 8:38 
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Joined: September 29th, 2005, 12:02
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Location: Chicago
Are they located in Texas?

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 Post subject: Re: BAD_CTX Intel SSD Bug
PostPosted: October 7th, 2013, 13:52 
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Joined: September 25th, 2013, 21:11
Posts: 8
Location: United States
Doomer wrote:
Are they located in Texas?


Yes, the Lab I've been to is in Dallas. From what I can tell it's also their HQ as well since their senior staff works out of the office on the first floor of their lab.

BTW Doomer, how is Chicago for computer related business, is their a lot of competition for hardware based Data Recovery?

From what I can tell there's only Seagate/Actionfront. Apparently, the lab I work with just opened a lab there so it must be relatively sparse, though it's tough to tell being a reseller.

Thanks, Tyr


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 Post subject: Re: BAD_CTX Intel SSD Bug
PostPosted: October 7th, 2013, 16:47 
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Location: Chicago
tyrdonar wrote:
Doomer wrote:
Are they located in Texas?

Yes, the Lab I've been to is in Dallas.

Thank you

tyrdonar wrote:
BTW Doomer, how is Chicago for computer related business, is their a lot of competition for hardware based Data Recovery?

IDK, I wasn't researching this topic much

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