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Colonel Chappy



Joined: 10 Sep 2008
Posts: 92
Location: USA

PostPosted: Mon Jul 26, 2021 19:56    Post subject: [+] SM3257EN L AA
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2x1 45 4c a8 92

Chip 1 required "Retry Sandisk V1/ fa f1 fd fc fa f7 f4" or way worse.
Chip 2 was "Fine."

I have the mix solved with Layout SM3257 1146_27 Xor b36e_256.

The ECC is correct for this chip, but the Block, Block Number and Bank number are wrong.

Hoping you can save me a huge head ache in trying to build this with Virtual Translator.

A quick Virtual Translator:

BS = 0x1020000

0 / 0xC88E0000
1 / 0x45eac0000
Colonel Chappy



Joined: 10 Sep 2008
Posts: 92
Location: USA

PostPosted: Mon Jul 26, 2021 22:50    Post subject:
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Dump Uploaded.
Сергей



Joined: 26 Aug 2005
Posts: 18864

Flash-Extractor developer

PostPosted: Tue Jul 27, 2021 3:40    Post subject:
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Block Pair 0x408000 * 2, Join by Page *2 = 0x1020000 = BS

Use layout
SM3257_41 1146_27 Xor b36e_256
But block numbers exist not at all pages

Also need work on ECC map
There is many red sectors in 01_01 and 02_01

I combine VT and BN in one Job.txt (attached)
Colonel Chappy



Joined: 10 Sep 2008
Posts: 92
Location: USA

PostPosted: Tue Jul 27, 2021 22:55    Post subject:
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Thanks for the help.

Fixing these ECC issues is going to be rough.
Colonel Chappy



Joined: 10 Sep 2008
Posts: 92
Location: USA

PostPosted: Thu Jul 29, 2021 19:46    Post subject:
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After some ECC map combining, this case was a great success.

Thanks again for your help.
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