Micro SD数据恢复：如何识别非BCH的ECC算法？

Monolith Micro SD_53 89 c4 08 32 1×1

Layout
  SM 1150_32_32 Xor 17fe_1024
Mix
  Input
    Order  0
Assembler
  Sector Number Slow
    Sector Size     0x1000
Comments
  Serg for forum 12448

Monolith Micro SD_54 ec 1e 98 af 1×1

Sector 1148 

ECC is not BCH

Xor ed83

Monolith Micro SD_55 ec 1e 98 af 1×4

Sector 36_2048_224 = 36_2272 = 2308 

Yes, may be LDPC 
May be an other ECC 
But not BCH

Monolith Micro SD_56 45 3c 98 b3 1×1

Layout
  Unknown 1146 Xor a6ed_256
Mix
  Input
    Order  0
Assembler
  Block Number
    Block Size   0xc00000
    Bank Space   0x4000
    Banks        00 / 0x000 / 0xfff
  Actions
    Scan
Comments
  Serg for forum 12513

Monolith Micro SD_57 45 3c 98 b3 1×2

Layout
  PS 1146 Xor 5061_256
Mix
  Input
    Order  0/1
  Block Pair
    Block  0xc00000
    Page   0x4000
  Join by Page
    Parts  2
    Page   0x8000
  Cut Bits
    Field  Sector Number
    Mask   0x80
Assembler
  Sector Number Slow
    Sector Size  0x8000
Comments
  by Arvika
  ID: 45 3c 98 b3 76 72

Monolith Micro SD_58 98 d7 98 92 1×1

Layout
  PS2251 1152_1146 v3
Mix
  Input
    Order  0
  Cut Bad Bytes
  Xor 5061
    Block     0x204000
    Page      0x2000
    Module    256
    BP Trash  true
  Block Pair
    Block  0x204000
    Page   0x2000
  Block Cut
    Block  0x400000/0x8000
Assembler
  Block Number
    Block Size      0x400000
    Bank Space      0x4000
    Banks           00 / 0x000 / 0x3ff
  Actions
    Scan
Comments
  over 90% of data is correct
  by Bolo

Monolith Micro SD_59 45 3e 98 b3 1×1

Layout
  20-82-00515-5 14_2048_230 Xor C634 16_2
Mix
  Input
    Order  0
Assembler
  Sector Number Slow
    Sector Size     0x1000
  Actions
    Scan
Comments
  by Arvika
  ID: 45 3e 98 b3 76 6b
  Arvika DB: MicroSD v196
  MBR starts at 0x1000000

Monolith Micro SD_59 ad 3a 18 03 1×2

Layout
  SM2702_40 1150_31 Xor dd SA Swap
Mix
  Input
    Order  0/1
  Block Pair
    Block  0x600000
    Page   0x4000
  Join by Page
    Parts  2
    Page   0x8000
Assembler
  Block Number
    Block Size   0x1800000
    Banks        00 / 0x000 / 0x593
  Actions
    Scan
Comments
  Serg for forum 12542

Monolith Micro SD_60 2c c4 18 32 1×2

Layout
  SM 1150_32_32 Xor 17fe_1024 SA
Mix
  Input
    Order  0/1
  Join by Dump
    Parts  2
Assembler
  Sector Number Slow
    Sector Size     0x1000
  Actions
    Scan
Comments
  by Arvika
  RAW recovery give 93% good photos.

Monolith Micro SD_61 2c c4 18 32 1×4

Layout
  SM 1150_32_32 Xor 17fe_1024 SA
Mix
  Input
    Order  0/1/2/3
  Join by Dump
    Parts  4
Assembler
  Sector Number Slow
    Sector Size     0x1000
  Actions
    Scan
Comments
  by Arvika
  RAW recovery give 85% good photos.

Monolith Micro SD_62 89 a4 08 32 1×1

Layout
  PS 1150_2 Xor 5061_256
Mix
  Input
    Order  0
  Cut Bits
    Field  Sector Number
    Mask   0x80ff
Assembler
  Sector Number Slow
    Sector Size     0x4000
  Actions
    Scan
Comments
  by Bolo
  Root and files OK but 
  Use also RAW recovery to check results

Monolith Micro SD_63 ec de 98 de 1×2

Layout
  PS 1150_2 Xor 5061_256
Mix
  Input
    Order  0/1
  Block Pair
    Block  0x200000
    Page   0x2000
  Join by Dump
    Parts  2
  Cut Bits
    Field  Sector Number
    Mask   0x80ff
  Cut Bits
    Field  Sector Number
    Mask   0x1000
Assembler
  Sector Number Slow
    Sector Size     0x4000
Comments
  Serg for forum 12716

Monolith Micro SD_64 98 3c 98 b3 1×1

Layout
  Unknown f1 1138 Xor 6771_0x600_256 BP SA
Mix
  Input
    Order  0
  Software Bad Bytes
    Block  768
    Group  2
  Block Pair
    Block  0xc00000
    Page   0x4000
Assembler
  Sector Number Slow
    Sector Size     0x8000
Comments
  Serg for forum 12723
  
  File tree good 
  Raw test: 525 good. 200 broken jpegs

Monolith Micro SD_65 98 d7 94 32 1×4

Layout
  SD_20 v2 1109_1103 Xor 0561_128
Mix
  Input
    Order  0/2/1/3
  Block Pair
    Block  0x100000
    Page   0x2000
  Join by Page
    Parts  2
    Page   0x4000
  Join by Dump
    Parts  2
Assembler
  Block Number
    Block Size      0x400000
    Bank Space      0x800
    
    Banks           00 / 0x000 / 0x79c
                    01 / 0x000 / 0x79c
  Actions
    Scan
Comments
  Serg for forum 12787
  
  Only Raw Recovery

Monolith Micro SD_66 2c 48 00 26 1×2

Layout
  SM3254 1066 v3 Xor 0186 64
Mix
  Input
    Order  0/1
  Block Pair
    Block  0x80000
    Page   0x1000
  Join by Page
    Parts  2
    Page   0x2000
Assembler
  Block Number
    Block Size      0x200000
    Banks           00..07 / 0x000 / 0x0ff
    Update Size     0x4000
    Update Enable   true
  Actions
    Scan
Comments
 by Bolo

Monolith Micro SD_67 98 3c 98 b3 1×1

Layout
  JmSD 1144 Xor 0a86_512
Mix
  Input
    Order  0
  Software Bad Bytes
    Block  256
    Group  1
  Block Cut
    Block  0xc00000/0xc00000
Assembler
  Block Number
    Block Size   0xc00000
    Bank Space   0x4000
    Banks        00 / 0x000 / 0x7ff
  Actions
    Scan
Comments
  Serg for forum 12788
  
  Odd blocks with empty

Monolith Micro SD_68 ec 1e d9 3f 1×8

Layout
  SM 1148_32_32 Xor 17fe_1024 SA
Mix
  Input
    Order  0/1/2/3/4/5/6/7
  Join by Dump
    Parts  8
Assembler
  Sector Number Slow
    Sector Size     0x1000
Comments
  by Bolo
  ECC = Check
  Scan
  ECC = Off
  Save Image or Save Root

Monolith Micro SD_69 ad de 14 ab 1×1

Layout
  JmSD 1118 Xor 0a86_512
Mix
  Input
    Order  0
  Software Bad Bytes
    Block  128
    Group  1
Assembler
  Block Number
    Block Size   0x400000
    Bank Space   0x4000
    Banks        00 / 0x000 / 0x3ff
  Actions
    Scan
Comments
  Only 1 plane contains data,
  need manually find and remove SBB
  Check conflicts
  Perfect Recovery
  by Bolo & Serg

Monolith Micro SD_70 ad de 14 ab 1×1

Layout
  Unknown 1088 v2 Xor 8855_32
Mix
  Input
    Order  0
  Software Bad Bytes
    Block  256
    Group  1
Assembler
  Block Number
    Block Size   0x400000
    Bank Space   0x400
    Banks        00 / 0x000 / 0x3ff
  Actions
    Scan
Comments
  by Arvika

Monolith Micro SD_71 ec de 98 de 1×2

Layout
  Unknown 40_1140 Xor 5000_256
Mix
  Input
    Order  1/0
  Block Pair
    Block  0x200000
    Page   0x2000
  Join by Page
    Parts  2
    Page   0x4000
Assembler
  Sector Number Slow
    Sector Size     0x2000
Comments
  Serg for forum 12887
  
  Tested on dump with many bit errors:
  assembler = raw, good 332, 4963 broken
  assembler = SN,  good 421, 2741 broken

Monolith Micro SD_72 45 3e 99 b3 1×1

Layout
  20-82-00515-5 14_2048_230 Xor C634 16_2
Mix
  Input
    Order  0
  Block Pair
    Block  0xc00000
    Page   0x4000
  Block Pair
    Block  0xc00000000
    Page   0x8000
Assembler
  Sector Number Slow
    Sector Size     0x1000
    Scan file name  SN_Slow.scan
Comments
  by Arvika
  ID: 45 3e 99 b3 7a 72
  
  Statistics: 
  RAW scan on RAW image with mix: 0.5% good photos
  Model Monolith USB 20-82-00515-5 - RAW scan give 74% good photos (without mix)
  Model Monolith_Micro_SD_72 - RAW scan give 83% good photos (with mix)

Monolith Micro SD_74 45 3e 98 b3 1×4 Ref

Layout
  SM 1142_32_32 Xor 17fe_768
Mix
  Input
    Order  0/1/2/3
  Block Cut
    Block  0xBF4000/0xc000/0x600000/0x600000
  Join by Dump
    Parts  4
Assembler
  Sector Number Slow
    Sector Size     0x1000
Comments
  Root demaged - need reconstruct manualy
  ECC check -> Scan -> ECC off
  Can Save Image and use Image Explorer or use any scan software
  by Greg & Bolo

Monolith Micro SD_74 89 c4 08 32 1×2

Layout
  PS 1150_2 Xor 5061_256
Mix
  Input
    Order  0/1
  Block Pair
    Block  0x2400000
    Page   0x4000
  Join by Dump
    Parts  2
  Cut Bits
    Field  Sector Number
    Mask   0x80ff
Assembler
  Sector Number Slow
    Sector Size     0x8000
Comments
  Read using special adapter 0.8V Low and 2.0V High for VCCQ
  by Greg & Bolo

Monolith Micro SD_75 32 2c c3 08 1×1

Layout
  SM 32_1150 Xor 17fe_256
Mix
  Input
    Order  0
  Cut Bits
    Field  Sector Number
    Mask   0xf800
Assembler
  Sector Number Slow
    Sector Size     0x4000
Comments
  Serg for forum 12950
  
  Tested on LBA pattern

Monolith Micro SD_76 98 3c 99 a3 1×4

Layout
  SD_20 v2 1148_1142
Mix
  Input
    Order  0/2/1/3
  Xor 5061
    Block     0x600000
    Page      0x4000
    Module    256
    BP Trash  false
  Block Pair
    Block  0x600000
    Page   0x4000
  Join by Page
    Parts  4
    Page   0x43c800000
Assembler
  Block Number
    Block Size      0xc00000
    Bank Space      0x1698
    Banks           00 / 0x000 / 0x1367
                    01 / 0x000 / 0x13af
  Actions
    Scan
Comments
  by Serg & Bolo
  MBR missing - Save Image and use Image Explorer or any 
  scan software for RAW recovery

常见问题解答

Micro SD卡数据恢复时，如何判断ECC是否采用BCH算法？

根据文章内容，可以通过分析扇区数据和ECC校验码来初步判断。例如，Monolith Micro SD_54中标注“ECC is not BCH”，说明该卡使用的ECC不是BCH算法。若发现Xor值（如ed83）与标准BCH特征不符，或扇区布局（如1×1）下校验码长度异常，则可能为非BCH。建议使用Flash Extractor工具读取原始数据，结合Xor和Mix Input Order参数进行交叉验证。

Monolith Micro SD卡中LDPC和BCH ECC有何区别？

文章提到Monolith Micro SD_55可能采用LDPC（低密度奇偶校验）或其他ECC，但明确不是BCH。LDPC比BCH纠错能力更强，但实现复杂，常见于高容量或高密度闪存。BCH适合中低密度存储，而LDPC在连续错误和随机错误混合场景下表现更优。恢复时需根据ECC类型调整算法，否则可能误判数据，导致恢复失败。建议使用Oracle Extractor支持多种ECC模式。

处理Monolith Micro SD时，Xor值（如17fe_1024）对数据恢复有何影响？

Xor值（如17fe_1024）是闪存数据解扰的关键参数，用于将原始数据还原为逻辑数据。文章示例中，Monolith Micro SD_53的Xor为17fe_1024，配合Mix Input Order 0和Assembler Sector Number Slow等设置，可正确重组扇区。若Xor值错误，数据将乱码。恢复时需根据芯片型号和布局（如SM 1150_32_32）自动或手动匹配Xor，否则即使读取成功也无法解析用户文件。

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Micro SD数据恢复：如何识别非BCH的ECC算法？

常见问题解答

Micro SD卡数据恢复时，如何判断ECC是否采用BCH算法？

Monolith Micro SD卡中LDPC和BCH ECC有何区别？

处理Monolith Micro SD时，Xor值（如17fe_1024）对数据恢复有何影响？

发表回复取消回复

需要专业数据恢复工具？

专业数据恢复，值得信赖

闪存芯片数据恢复，专业之选

芯片级恢复，精准高效

Oracle 数据库精准恢复

取证级数据提取

全球数据恢复实验室与取证团队的信赖之选

企业级数据安全保障

立即体验专业数据恢复工具

Micro SD数据恢复：如何识别非BCH的ECC算法？

常见问题解答

Micro SD卡数据恢复时，如何判断ECC是否采用BCH算法？

Monolith Micro SD卡中LDPC和BCH ECC有何区别？

处理Monolith Micro SD时，Xor值（如17fe_1024）对数据恢复有何影响？

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