| JMF616 89 68 04 46 16×1 |
Layout
JMF616 1070 Xor 6771_1
Mix
Input
Order 4/0/5/1/6/2/7/3/8/12/9/13/10/14/11/15
Block Pair
Block 0x100000
Page 0x1000
Join by Page
Parts 16
Page 0x200000
Cross Block
Field Block Number
Block 0x200000
Parts 16
Assembler
Block Number
Block Size 0x200000
Bank Space 0x10000
Banks 00 / 0x000 / 0x7fff
Mix 8/0x1000
2/0x10000
Actions
Scan
Comments
Serg for forum 7242
| JMF616 98 d5 94 32 8×1 |
Layout
JMF616 1070 Xor 6771_1
Mix
Input
Order 7/1/6/0/3/2/5/4
Join by Page
Parts 8
Page 0x100000
Cross Block
Field Block Number
Block 0x100000
Parts 16
Assembler
Block Number
Block Size 0x100000
Bank Space 0x4000
Banks 00 / 0x000 / 0x3fff
Mix 16/0x2000
Scan Back true
Actions
Scan
Comments
by Vlad forum 4915
many conflicts
Layout
JMF616 1070 Xor 6771_1
Mix
Input
Order 14/2/12/0/6/4/10/8/15/3/13/1/7/5/11/9
Join by Page
Parts 8
Page 0x100000
Join by Page
Parts 2
Page 0x1000000
Cross Block
Field Block Number
Block 0x100000
Parts 32
Assembler
Block Number
Block Size 0x100000
Bank Space 0x10000
Banks 00 / 0x000 / 0xffff
Mix 32/0x2000
Actions
Scan
Comments
by Vlad forum 4979
dumps had got many ECC errors
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| JMF616 98 d7 94 32 16×1 |
Layout
JMF616 1070 Xor 6771_1
Mix
Input
Order 7/1/6/0/3/2/5/4/11/13/10/12/15/14/9/8
Join by Page
Parts 8
Page 0x100000
Join by Page
Parts 2
Page 0x1000000
Cross Block
Field Block Number
Block 0x100000
Parts 32
Assembler
Block Number
Block Size 0x100000
Bank Space 0x10000
Banks
0 / 0x000 / 0x10000
Mix 32/0x2000
Scan Back true
Actions
Scan
| JMF616 98 d7 94 32 16×2 |
Layout
JMF616 1070 Xor 6771_1
Mix
Input
Order 14/2/12/0/6/4/10/8/15/3/13/1/7/5/11/9/22/26/20/24/30/28/18/16/23/27/2
1/25/31/29/19/17
Join by Page
Parts 8
Page 0x100000
Join by Page
Parts 4
Page 0x1000000
Cross Block
Field Block Number
Block 0x100000
Parts 64
Assembler
Block Number
Block Size 0x100000
Bank Space 0x400000
Banks
0 / 0x000 / 0x1ffff
Mix 64/0x2000
Scan Back true
Actions
Scan
| JMF616 ec d7 94 72 8×1 |
Layout
JMF616 1070 Xor 6771_1
Mix
Input
Order 7/1/6/0/3/2/4/5
Join by Page
Parts 8
Page 0x100000
Cross Block
Field Block Number
Block 0x100000
Parts 16
Step 1
Assembler
Block Number
Block Size 0x100000
Bank Space 0x40000
Banks 00 / 0x000 / 0x7fff
Mix 16/0x2000
Actions
Scan
Comments
Serg for forum 12657
常见问题解答
JMF616的Xor 6771_1算法在数据恢复中起什么作用？
JMF616主控使用Xor 6771_1算法对NAND闪存数据进行异或处理，这是其固件特有的数据加扰方式。在数据恢复时，必须正确应用该Xor值（如6771_1）才能还原原始数据。如果Xor值匹配错误，读取的数据将完全错乱，无法直接分析。因此，针对JMF616的恢复流程中，识别并应用正确的Xor算法是第一步，也是后续解析页布局和块映射的前提。
JMF616的Mix Input Order参数对数据重组有何影响？
Mix Input Order（如4/0/5/1/6/2/7/3/8/12/9/13/10/14/11/15）定义了NAND闪存中多通道或多页数据的交织顺序。在恢复JMF616时，必须按此顺序重新排列读取的数据，才能正确还原每个物理页的内容。若忽略该参数，数据会因通道交错而错位，导致文件系统结构无法识别。正确应用Mix Input Order是确保后续页拼接和块重组成功的关键。
JMF616的Block Pair和Page Size参数如何配合使用？
JMF616的Block Pair（块对）参数指定了物理块配对的逻辑关系，而Page Size（如0x1000）定义了每个页的原始大小。在数据恢复中，需先按Block Pair将两个物理块视为一个逻辑块，再依据Page Size对块内数据进行分页提取。同时，Join by Page Parts（16）指示如何将分散的页片段合并为完整页。这些参数共同决定了数据在NAND中的实际存储结构，正确配置后才能无损重组用户数据。