[Optimus L3, L5, L7 Q&A, Help & Troubleshooting] hecatae:
oh cool, syntax issue, I go fix

pulling the V10I rom apart I got this:

DZExtract.exe -x "DZ_LGE400AT-00-V10i-EUR-XXX-JUN-01-2012+0.dz"
DZExtract v0.2 by jp

Extracting subfiles...
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Reading sub-header @0x13c
Checking magic number...........................Ok
Checking hash...................................Ok (3F45-E7A0-1838-78A6-9BCA-2
5E2-38C6-CB7F)
Extracting 'amss.bin' (9253 kb).................Ok
Inflating.......................................Ok
Checking subfile hash...........................Ok (0F71-7588-3CCE-F1E2-3E1A-2
812-2A37-90BF)
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Reading sub-header @0x90967b
Checking magic number...........................Ok
Checking hash...................................Ok (5A62-ACDF-7263-F762-D11D-B
7E9-6C48-2432)
Extracting 'partition.bin' (0 kb)...............Ok
Inflating.......................................Ok
Checking subfile hash...........................Ok (974B-13D8-4205-1D78-D976-7
FA8-C11C-65B7)
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Reading sub-header @0x9098ab
Checking magic number...........................Ok
Checking hash...................................Ok (CEA5-5D17-BE24-C837-339B-C
C16-425D-ABA2)
Extracting 'qcsblhd_cfgdata.mbn' (0 kb).........Ok
Inflating.......................................Ok
Checking subfile hash...........................Ok (A199-4319-25CE-7B01-7658-2
7B2-33BC-07B8)
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Reading sub-header @0x909bb0
Checking magic number...........................Ok
Checking hash...................................Ok (3D9F-C8C7-4EEB-DDDD-72B8-2
482-BB18-B079)
Extracting 'qcsbl.mbn' (78 kb)..................Ok
Inflating.......................................Ok
Checking subfile hash...........................Ok (A43B-BFE8-5F13-EB57-8086-3
11E-026C-540A)
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Reading sub-header @0x91d51d
Checking magic number...........................Ok
Checking hash...................................Ok (D4B9-6CDC-5762-0461-4B43-E
4A8-CDA2-6CF0)
Extracting 'system.img.ext4_0' (43265 kb).......Ok
Inflating.......................................Ok
Checking subfile hash...........................Ok (A5DD-C346-0A36-08B9-FAE5-1
0BB-898D-D96F)
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Reading sub-header @0x335dbac
Checking magic number...........................Ok
Checking hash...................................Ok (A235-812F-721A-FEA9-ECFF-3
03F-E92B-1C56)
Extracting 'system.img.ext4_1' (50801 kb).......Ok
Inflating.......................................Ok
Checking subfile hash...........................Ok (ABA4-06D3-44BD-541F-3B9F-F
C76-67A0-A8B5)
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Reading sub-header @0x64fa18a
Checking magic number...........................Ok
Checking hash...................................Ok (F4F1-80B7-82DC-70ED-E7A2-D
177-0E22-3704)
Extracting 'system.img.ext4_2' (36594 kb).......Ok
Inflating.......................................Ok
Checking subfile hash...........................Ok (7284-EB44-9190-7D09-884C-B
54C-F71F-FC42)
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Reading sub-header @0x88b6d05
Checking magic number...........................Ok
Checking hash...................................Ok (6ADC-23C5-500B-651A-00B8-9
64C-CCF5-7EB9)
Extracting 'system.img.ext4_3' (16016 kb).......Ok
Inflating.......................................Ok
Checking subfile hash...........................Ok (969D-E1DB-12A2-D9E8-5282-A
CCE-0220-66DD)
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Reading sub-header @0x985b040
Checking magic number...........................Ok
Checking hash...................................Ok (87D9-B606-4886-13EA-081F-6
C04-5B6D-7123)
Extracting 'system.img.ext4_4' (59 kb)..........Ok
Inflating.......................................Ok
Checking subfile hash...........................Ok (76C1-36BC-0D68-0ABD-978D-9
934-070C-01E5)
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Reading sub-header @0x9869ff9
Checking magic number...........................Ok
Checking hash...................................Ok (F080-A367-AEB8-DC81-471E-D
535-8038-8CF0)
Extracting 'recovery.img' (5006 kb).............Ok
Inflating.......................................Ok
Checking subfile hash...........................Ok (B20F-C71E-2371-14B9-E467-4
49F-E740-EFA6)
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Reading sub-header @0x9d4dac6
Checking magic number...........................Ok
Checking hash...................................Ok (85A9-9ED3-160D-7278-4ECB-F
2E6-D706-0C73)
Extracting 'emmc_appsboot.bin' (41 kb)..........Ok
Inflating.......................................Ok
Checking subfile hash...........................Ok (69F5-EEDF-159C-4B30-52B0-6
470-CB94-DA74)
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Reading sub-header @0x9d58088
Checking magic number...........................Ok
Checking hash...................................Ok (8F9D-3BC2-8741-9776-861C-2
E04-C521-6830)
Extracting 'persist.img.ext4' (24 kb)...........Ok
Inflating.......................................Ok
Checking subfile hash...........................Ok (0920-11ED-30CD-757E-924F-1
81D-089A-301C)
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Reading sub-header @0x9d5e52f
Checking magic number...........................Ok
Checking hash...................................Ok (DFB4-987B-A332-E21A-34AA-0
727-8ED5-0A90)
Extracting 'oemsbl.bin' (274 kb)................Ok
Inflating.......................................Ok
Checking subfile hash...........................Ok (D908-CC77-8AC6-FB52-E023-A
614-279D-82F6)
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Reading sub-header @0x9da313c
Checking magic number...........................Ok
Checking hash...................................Ok (D41B-8E8F-9C11-1026-704A-3
9EF-C246-7F97)
Extracting 'boot.img' (3693 kb).................Ok
Inflating.......................................Ok
Checking subfile hash...........................Ok (4148-6638-71B7-7123-87F4-8
581-334F-5270)
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Reading sub-header @0xa13e6cf
Checking magic number...........................This is an offset table, skipp
ing end of file

build date is 1st June 2012, so quite recent, system img has been split into five different parts, all same size except last one.

uploaded here in case anyone wants to look at it: http://www.multiuplo...o.uk/RKO822VP61