3.0 KiB
Phase 0.9E-R2 inner archive correlation
Date: 2026-07-19
Result: INNER_ARCHIVE_HASH_MISMATCH
Phase 0.9E-R excluded an outer byte match. R2 separately tests the plausible
repack case by comparing complete inner archive.dat bytes.
Local identity
| Object | Size | SHA-256 |
|---|---|---|
| local outer ZIP | 504159435 | 805e3f87f0c371223619ffc7d3a7b3c0d41a1fae8a8b1171d9e2f162659e8291 |
local PS5/EXPORT/BACKUP/202606102126_00/archive.dat |
504365056 | 6439834e8856d45b6d6fe699b74c35ca6985a199ea8ecf3e398c018d37be2d55 |
Mandatory official candidate
The exact official Gezine/Y2JB 1.6 asset
Y2JB_backup_1.6.4.03.zip was downloaded once from its GitHub release URL.
Resume and retry were disabled. The closed and reopened file was 504395044
bytes and its locally calculated SHA-256 was
b01b4f442327f9eca90ffc4506dfa58249e4ac70cb9d7488c856c9e8dfaf37b4,
equal to GitHub's official digest.
It was not executed or restored. Static ZIP inventory:
| Entry | Method | Compressed | Uncompressed | CRC32 | Timestamp | Entry SHA-256 |
|---|---|---|---|---|---|---|
PS5/ |
0 | 0 | 0 | 00000000 |
2026-06-09 04:15:20 |
empty SHA-256 |
PS5/EXPORT/ |
0 | 0 | 0 | 00000000 |
2026-06-09 04:15:20 |
empty SHA-256 |
PS5/EXPORT/BACKUP/ |
0 | 0 | 0 | 00000000 |
2026-06-09 04:15:20 |
empty SHA-256 |
PS5/EXPORT/BACKUP/202606090510_00/ |
0 | 0 | 0 | 00000000 |
2026-06-09 04:15:20 |
empty SHA-256 |
PS5/EXPORT/BACKUP/202606090510_00/archive.dat |
8 | 504394122 | 504496128 | 7db3b89a |
2026-06-09 05:15:58 |
3e1f0867d5d8362cbf722d51d0e68c26243d6b33d78460d978580b510c854212 |
The four directory entries use Unix create-system 3, create/extract version 20, external attributes 1107230720, and empty comments. The inner entry uses create system/version 3/20, extract version 20, flag bits 8, external attributes 2176188416, header offset 315, and an empty comment.
Full inner comparison
| Property | Local inner | Official inner |
|---|---|---|
| size | 504365056 | 504496128 |
| SHA-256 | 6439834e...37be2d55 |
3e1f0867...0c854212 |
| complete bytes equal | no | no |
The size differs by 131072 bytes. Complete streaming comparison and both
hashes disagree. Classification is INNER_ARCHIVE_HASH_MISMATCH, so the
local outer cannot be classified REPACKAGED_OFFICIAL_BACKUP.
Community comparison performed
The one source-motivated community download was
owendswang/Y2JB-P2JB-bdj_unpatch release v1.4-autoloader,
PS5-7.61-backup-Y2JB+autoloader-20260609-en.zip. GitHub and local size were
504425435 bytes; both SHA-256 values were
8552d7c3c7bb3f078d967f56dfe1b488b37e3ed13e10c5fe97ae222482d56897.
Its inner PS5/EXPORT/BACKUP/202606100638_00/archive.dat is 504627200 bytes,
CRC32 cf138df3, and SHA-256
d4f9b1ba4e32af175a3431a7734085d5420370ebb79f9a32852eb824a90e190e.
It is neither the same size, hash, nor bytes as the local inner:
INNER_ARCHIVE_HASH_MISMATCH.
Outer mismatch did not substitute for inner analysis. The negative inner results now independently exclude both downloaded candidates.