[LG Optimus 4X HD] Beunhof:
I got to 10% in 52 seconds and then I got a disconnect error. I gave it a try with windows enabled just to make sure but the same thing happened. Seems like a nice and fast tool, too bad it couldn't do the trick.

This attempt also failed, but I might have some usefull information now:

[22:56:11.593]Selected 7 Binary : c:\users\beunhof\desktop\fix\lgp880at-00-v20b-eur-xxx-jul-17-2013+0.dz
[22:56:11.594]DoDownload : Retry(1)
[22:56:11.595]###### Port Opend(41) ######
[22:56:11.595]Opened COM41
[22:56:11.595]=====================================================
[22:56:11.596]= DLL Info : Dec 12 2012 11:01:58
[22:56:11.596]=====================================================
[22:56:11.602] MODEL:P880
[22:56:11.605] IMEI:000000000031
[22:56:11.611] PID:0000000003001721
[22:56:11.614] SWV:LGP880AT-00-V20b-EUR-XXX-JUL-17-2013+0
[22:56:11.617][VerReq]
[22:56:11.618]Model Name : Target(P880)
[22:56:11.618][FeatureQuery]
[22:56:11.633]This firmware supports the following features:
[22:56:11.633] - Protocol Version : 3
[22:56:11.633] - CP Download : TRUE
[22:56:11.633] - AP Download : TRUE
[22:56:11.633] - ROM Download : TRUE
[22:56:11.633] - MaxPacketLength : 0x40000
[22:56:11.633] - Battery Level : 37%
[22:56:11.633] - OperatingMode : 4
[22:56:11.633] - AutoUpdateBuffer : 1
[22:56:11.633] - ThreadOn : 1
[22:56:11.633] - Flashless : 0
[22:56:11.633] - UpdateBct : 0
[22:56:11.636] Dz Information
[22:56:11.636] - Model Name : Binary(P880)
[22:56:11.636] - SWV : LGP880AT-00-V20b-262-000-JUL-17-2013+0
[22:56:11.636] - BuildTime : 2013-07-18 01:35:51
[22:56:11.636] - SecureType : 1
[22:56:11.636] - TotalFiles : 10
[22:56:11.636] Loading FLS
[22:56:11.729]IntelFlash::GetDownloadSize
[22:56:11.729] - PSI : 35316
[22:56:11.729] - EBL : 157172
[22:56:11.729] - Hardware : 172
[22:56:11.729] - Security : 2048
[22:56:11.729] - DownloadData : 20572
[22:56:11.729] - Security : 2048
[22:56:11.729] - DownloadData : 167768
[22:56:11.729] - Security : 2048
[22:56:11.729] - DownloadData : 697892
[22:56:11.729] - Security : 2048
[22:56:11.729] - DownloadData : 356380
[22:56:11.729] - Security : 2048
[22:56:11.729] - DownloadData : 7864428
[22:56:11.729] Loading CFG
[22:56:11.733]NvidiaFlash::GetDownloadSize
[22:56:11.733] - BCT : 6128
[22:56:11.733] - EBT : 1132440
[22:56:11.733] - EKS : 684
[22:56:11.733] - SOS : 8228864
[22:56:11.733] - LNX : 7120896
[22:56:11.733] - APP : 925208920
[22:56:11.733]TotalSize : 83624509
[22:56:11.733]CP Download Starting : 0
[22:56:11.733]CP Binary has been loaded(9349476)
[22:56:11.733][Intel] MemoryMap
[22:56:11.733]	FlashStartAddr : 0x40000000
[22:56:11.733]	CUST : StartAddress(0x63000000), Length(0x00500000) : LINUX
[22:56:11.734]	CUST : StartAddress(0x38000000), Length(0x08400000) : CLONE
[22:56:11.734]	CUST : StartAddress(0x30000000), Length(0x08400100) : PREFLASH
[22:56:11.734]	CUST : StartAddress(0x20000000), Length(0x00500000) : USBRO_ISO
[22:56:11.734]	CUST : StartAddress(0x90000000), Length(0x001FE000) : CUSTDATA
[22:56:11.734][CMD_Intel_DownloadMode]
[22:56:12.294] - Device synchronized
[22:56:12.294][Injecting PSI RAM] : 35316
[22:56:12.294] - Sending PSI RAM
[22:56:15.354] - Receiving CRC
[22:56:15.367] - Received CRC OK : 01
[22:56:15.367] - Receiving ACK
[22:56:15.379] - Received ACK : 01 00 AA
[22:56:15.379] - PSI RAM Running
[22:56:15.379][Injecting EBL] : 157172
[22:56:15.379] - Sending EBL Length
[22:56:15.389] - Receiving ACK
[22:56:15.401] - Received ACK : 0xCCCC
[22:56:15.401] - Sending EBL : 157172
[22:56:29.112] - Sending CRC : FA
[22:56:29.121] - Receiving ACK
[22:56:29.169] - Received OK : 51 A5
[22:56:29.169] - Receiving Capabilities : 76
[22:56:29.184] - Boot-loader is active
[22:56:29.184] - EBL version: XMM6260_20.21_M1S1
[22:56:29.184] - Boot mode is: 00BB
[22:56:29.184] - EBL Running
[22:56:29.184][ReqSetProtConf]
[22:56:29.184] == prot_capabilities_t ==
[22:56:29.184] - protocol_version : 11
[22:56:29.184] - package_size : 2 -> 8
[22:56:29.184] - crc_type : 1
[22:56:29.184] - skip_writeblock_tx : 0
[22:56:29.184] - compression : 11 -> 10
[22:56:29.184] - compression : 10
[22:56:29.184] - flags : 1
[22:56:29.184] - erase_sector_verify : 0
[22:56:29.185] - flash_debug : 0
[22:56:29.185] - protocol_crc : 0
[22:56:29.185] - skip_erase : 1 -> 0
[22:56:29.185] - skip_wr_pack_crc : 0
[22:56:29.185] - Sending capabilities
[22:56:29.194] - Receiving ACK
[22:56:29.208] - Received : ACK 0100
[22:56:29.208][CnfBaudChange] : 3250000
[22:56:29.208] - Sending BaudRate
[22:56:29.217] - Receiving ACK
[22:56:29.254] - Received BaudRate : 3250000
[22:56:29.254] - Changing BaudRate
[22:56:29.267] - Changed BaudRate : 3250000
[22:56:29.267][ReqFlashId]
[22:56:29.267] - Platform : 14
[22:56:29.267] - ProjectName : XMM6260
[22:56:29.267] - Sending HardWare Info
[22:56:29.276] - Receiving ACK
[22:56:29.358] - Received ACK : 0000
[22:56:29.358][ReqCfiInfo_1]
[22:56:29.358] - Sending CfiInfo1
[22:56:29.368] - Receiving CfiInfo2
[22:56:29.406] - Received CfiInfo2 : 256
[22:56:29.406][ReqCfiInfo_2]
[22:56:29.406] - Sending CfiInfo2
[22:56:29.415] - Receiving ACK
[22:56:29.429] - Received ACK : FFFF
[22:56:29.429][Downloading BOOT CORE PSI(0)] : psi.fls
[22:56:29.429][ReqSecStart]
[22:56:29.429] - BootCoreVersion : 131072
[22:56:29.429] - Sending Security Start
[22:56:29.444] - Receiving ACK
[22:56:29.529][ERROR] Type : 0041 <> 0204
[22:56:29.529] - IndErrorMsg
[22:56:29.542]File_id(34), Line_number(415), Error_class(1), Error_code(79)
[22:56:29.542]File_id(16), Line_number(617), Error_class(1), Error_code(10)
[22:56:29.542]File_id(0), Line_number(0), Error_class(0), Error_code(0)
[22:56:29.542]File_id(0), Line_number(0), Error_class(0), Error_code(0)
[22:56:29.542]File_id(0), Line_number(0), Error_class(0), Error_code(0)
[22:56:29.542]File_id(0), Line_number(0), Error_class(0), Error_code(0)
[22:56:29.542]File_id(0), Line_number(0), Error_class(0), Error_code(0)
[22:56:29.542]File_id(0), Line_number(0), Error_class(0), Error_code(0)
[22:56:29.542] - Failure!
[22:56:29.542]ERROR : _Func_03_Ebl_0_ReqSecStart - Line(300)
[22:56:29.543]__Proc_NormalDownload : 0
[22:56:29.543]Error! IntelFlash:__Proc_NormalDownload
[22:56:29.544]_DoDownload : 0
[22:56:29.544]
-----------------------------------------Trace Last 100 Message-------------------------------------------------
[22:56:29.169][T000015] 43 01 00 00 4C 00 00 00 88 13 00 00 15 19 7E C...L..........

[22:56:29.184][R000086] 43 00 00 00 4C 00 00 00 BB 00 00 00 14 00 00 00 15 00 00 00 58 4D 4D 36 32 36 30 5F 32 30 2E 32 C...L...............XMM6260_20.2

[22:56:29.184] - Boot-loader is active
[22:56:29.184] - EBL version: XMM6260_20.21_M1S1
[22:56:29.184] - Boot mode is: 00BB
[22:56:29.184] - EBL Running
[22:56:29.184][ReqSetProtConf]
[22:56:29.184] == prot_capabilities_t ==
[22:56:29.184] - protocol_version : 11
[22:56:29.184] - package_size : 2 -> 8
[22:56:29.184] - crc_type : 1
[22:56:29.184] - skip_writeblock_tx : 0
[22:56:29.184] - compression : 11 -> 10
[22:56:29.184] - compression : 10
[22:56:29.184] - flags : 1
[22:56:29.184] - erase_sector_verify : 0
[22:56:29.185] - flash_debug : 0
[22:56:29.185] - protocol_crc : 0
[22:56:29.185] - skip_erase : 1 -> 0
[22:56:29.185] - skip_wr_pack_crc : 0
[22:56:29.185] - Sending capabilities
[22:56:29.185][T000101] 44 00 00 00 56 00 00 00 20 4E 00 00 CE 88 7E 02 00 86 00 4C 00 BB 00 00 00 14 00 00 00 15 00 00 D...V....N.........L............

[22:56:29.194][R000010] 44 00 00 00 56 00 00 00 D0 6E D...V....n

[22:56:29.194] - Receiving ACK
[22:56:29.196][T000015] 43 01 00 00 0C 00 00 00 88 13 00 00 E4 7C 7E C............|.

[22:56:29.208][R000022] 43 00 00 00 0C 00 00 00 02 00 86 00 02 00 01 00 89 00 03 00 B5 2C C....................,

[22:56:29.208] - Received : ACK 0100
[22:56:29.208][CnfBaudChange] : 3250000
[22:56:29.208] - Sending BaudRate
[22:56:29.208][T000029] 44 00 00 00 0E 00 00 00 20 4E 00 00 FB 9B 7E 02 00 82 00 04 00 50 97 31 00 9E 01 03 00 D........N...........P.1.....

[22:56:29.217][R000010] 44 00 00 00 0E 00 00 00 1E 5E D........^

[22:56:29.217] - Receiving ACK
[22:56:29.218][T000015] 43 01 00 00 06 00 00 00 10 27 00 00 EF B4 7E C........'.....

[22:56:29.230][R000016] 43 00 00 00 06 00 00 00 02 00 82 00 04 00 C7 FA C...............

[22:56:29.230][T000015] 43 01 00 00 04 00 00 00 88 13 00 00 58 51 7E C...........XQ.

[22:56:29.242][R000014] 43 00 00 00 04 00 00 00 50 97 31 00 9E D9 C.......P.1...

[22:56:29.242][T000015] 43 01 00 00 04 00 00 00 10 27 00 00 80 BF 7E C........'.....

[22:56:29.254][R000014] 43 00 00 00 04 00 00 00 9E 01 03 00 B7 96 C.............

[22:56:29.254] - Received BaudRate : 3250000
[22:56:29.254] - Changing BaudRate
[22:56:29.254][T000011] 45 00 00 00 50 97 31 00 F3 0E 7E E...P.1....

[22:56:29.267][R000010] 45 00 00 00 50 97 31 00 F3 0E E...P.1...

[22:56:29.267] - Changed BaudRate : 3250000
[22:56:29.267][ReqFlashId]
[22:56:29.267] - Platform : 14
[22:56:29.267] - ProjectName : XMM6260
[22:56:29.267] - Sending HardWare Info
[22:56:29.267][T000197] 44 00 00 00 B6 00 00 00 20 4E 00 00 2D 90 7E 02 00 01 08 AC 00 0E 00 00 00 00 00 00 02 00 C2 01 D........N..-...................

[22:56:29.276][R000010] 44 00 00 00 B6 00 00 00 5A DA D.......Z.

[22:56:29.276] - Receiving ACK
[22:56:29.277][T000015] 43 01 00 00 0C 00 00 00 88 13 00 00 E4 7C 7E C............|.

[22:56:29.358][R000022] 43 00 00 00 0C 00 00 00 02 00 01 08 02 00 00 00 0B 00 03 00 4F 25 C...................O%

[22:56:29.358] - Received ACK : 0000
[22:56:29.358][ReqCfiInfo_1]
[22:56:29.358] - Sending CfiInfo1
[22:56:29.359][T000027] 44 00 00 00 0C 00 00 00 20 4E 00 00 94 90 7E 02 00 84 00 02 00 00 00 86 00 03 00 D........N.................

[22:56:29.368][R000010] 44 00 00 00 0C 00 00 00 68 67 D.......hg

[22:56:29.368] - Receiving CfiInfo2
[22:56:29.369][T000015] 43 01 00 00 06 00 00 00 10 27 00 00 EF B4 7E C........'.....

[22:56:29.381][R000016] 43 00 00 00 06 00 00 00 02 00 84 00 00 01 B4 C7 C...............

[22:56:29.381][T000015] 43 01 00 00 00 01 00 00 88 13 00 00 53 D8 7E C...........S..

[22:56:29.394][R000266] 43 00 00 00 00 01 00 00 00 00 00 00 AD 00 B1 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 C...............................

[22:56:29.394][T000015] 43 01 00 00 04 00 00 00 10 27 00 00 80 BF 7E C........'.....

[22:56:29.406][R000014] 43 00 00 00 04 00 00 00 E3 01 03 00 7D 47 C...........}G

[22:56:29.406] - Received CfiInfo2 : 256
[22:56:29.406][ReqCfiInfo_2]
[22:56:29.406] - Sending CfiInfo2
[22:56:29.406][T000281] 44 00 00 00 0A 01 00 00 20 4E 00 00 F0 12 7E 02 00 85 00 00 01 00 00 00 00 AD 00 B1 00 00 00 00 D........N......................

[22:56:29.415][R000010] 44 00 00 00 0A 01 00 00 2E 76 D........v

[22:56:29.415] - Receiving ACK
[22:56:29.417][T000015] 43 01 00 00 0C 00 00 00 88 13 00 00 E4 7C 7E C............|.

[22:56:29.429][R000022] 43 00 00 00 0C 00 00 00 02 00 85 00 02 00 FF FF 85 02 03 00 0B 76 C....................v

[22:56:29.429] - Received ACK : FFFF
[22:56:29.429][Downloading BOOT CORE PSI(0)] : psi.fls
[22:56:29.429][ReqSecStart]
[22:56:29.429] - BootCoreVersion : 131072
[22:56:29.429] - Sending Security Start
[22:56:29.429][T002073] 44 00 00 00 0A 08 00 00 20 4E 00 00 C9 53 7E 02 00 04 02 00 08 00 00 00 00 00 00 00 00 00 00 00 D........N...S..................

[22:56:29.444][R000010] 44 00 00 00 0A 08 00 00 30 EA D.......0.

[22:56:29.444] - Receiving ACK
[22:56:29.445][T000015] 43 01 00 00 0C 00 00 00 88 13 00 00 E4 7C 7E C............|.

[22:56:29.529][R000022] 43 00 00 00 0C 00 00 00 02 00 41 00 40 00 22 00 9F 01 01 00 19 1D C.........A.@.".......

[22:56:29.529][ERROR] Type : 0041 <> 0204
[22:56:29.529] - IndErrorMsg
[22:56:29.529][T000015] 43 01 00 00 3E 00 00 00 88 13 00 00 03 9A 7E C...>..........

[22:56:29.542][R000072] 43 00 00 00 3E 00 00 00 4F 00 10 00 69 02 01 00 0A 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 C...>...O...i...................

[22:56:29.542]File_id(34), Line_number(415), Error_class(1), Error_code(79)
[22:56:29.542]File_id(16), Line_number(617), Error_class(1), Error_code(10)
[22:56:29.542]File_id(0), Line_number(0), Error_class(0), Error_code(0)
[22:56:29.542]File_id(0), Line_number(0), Error_class(0), Error_code(0)
[22:56:29.542]File_id(0), Line_number(0), Error_class(0), Error_code(0)
[22:56:29.542]File_id(0), Line_number(0), Error_class(0), Error_code(0)
[22:56:29.542]File_id(0), Line_number(0), Error_class(0), Error_code(0)
[22:56:29.542]File_id(0), Line_number(0), Error_class(0), Error_code(0)
[22:56:29.542] - Failure!
[22:56:29.542]ERROR : _Func_03_Ebl_0_ReqSecStart - Line(300)
[22:56:29.543]__Proc_NormalDownload : 0
[22:56:29.543]Error! IntelFlash:__Proc_NormalDownload
[22:56:29.544]_DoDownload : 0
[22:56:29.544]
-----------------------------------------Trace Last 100 Message-------------------------------------------------
[22:56:29.547]
------------------------------------------Trace Last 100 Message-------------------------------------------------
[22:56:29.547] ErrorCode(210)

Anyone an idea on what the strange hex-ish lines are? they show up just after the first error. Maybe something is encrypted? I'll google error code 10, 79 and 210 in a minute.

I lost hope and I can't bother to try the last link I posted, maybe tomorrow

Any thoughts on the log?

EDIT:

Searching the errors in the log led me here:

http://xdaforums.com/showthread.php?t=2287267

http://xdaforums.com/showthread.php?t=2786001

http://xdaforums.com/showthread.php?t=2737915

The last one is identical to my problem, my phone also couldn't read my SIM. Sadly no one ever solved the problem here.

I think these solutions are the last resort:

http://xdaforums.com/showthread.php?t=1448803

http://xdaforums.com/showthread.php?t=1861942

I will give these a try later today when I get home.