SamyGO

Of course log is erased on reboot, but you have to catch it between injection and crash. You have enough time to Telnet

samyGOso -T -B -l /mnt/opt/privateer/usr/libso/libFakeEDID.so DUMP HDMI1
[FakeEDID] SamyGO E/F/H libFakeEDID v0.2.0 - (c) zoelechat 2015
[FakeEDID] _ZN9TDBuilder11GetTDiStoreE15TDStoreObject_k [0x75c824].
[FakeEDID] _ZN9TDBuilder16GetTDiHdmiSwitchEv [0x75bad8].
[FakeEDID] _ZN8TDaStore6CreateEi [0x77f1bc].
[FakeEDID] _ZN8TDaStore7DestroyEv [0x77eec8].
[FakeEDID] dlsym '_ZN14TDsEepromStore5WriteEjjPKh' failed.
[FakeEDID] _ZN14TDsEepromStore10t_WriteDDCEjjPKh [0x7b62c4].
[FakeEDID] dlsym '_ZN14TDsEepromStore4ReadEjjPh' failed.
[FakeEDID] _ZN14TDsEepromStore9t_ReadDDCEjjPh [0x7b6298].
[FakeEDID] dlsym '_ZN18TDsPrimeHdmiSwitch11GetEDIDDataE10CDSource_kPhPt' failed.
[FakeEDID] dlsym '_ZN13TDaHdmiSwitch11GetEDIDDataE10CDSource_kPhPt' failed.
[FakeEDID] dlsym '_ZN19PrimeHdmiSwitchBase11GetEDIDDataE10CDSource_kPhPt' failed .
[FakeEDID] _ZN20TDsSII9687HdmiSwitch11GetEDIDDataE10CDSource_kPhPt [0x7a4c78].
[FakeEDID] lib_init, >>>
[FakeEDID] Dumping HDMI1 EDID!
[FakeEDID] * Stored to /dtv/FakeEDIDdump_HDMI1.bin
[FakeEDID] <<< lib_deinit

mmmh you should disable watchdog, so that TV won't immediately reboot

/mnt # samyGOso -T -B -l /mnt/opt/privateer/usr/libso/libFakeEDID.so DUMP
samyGOso v1.2.5 (c) bugficks 2013-2014, sectroyer 2014-2015
Injecting '/mnt/opt/privateer/usr/libso/libFakeEDID.so' resident: '0'
Succeeded.

Ok, doesn't matter, let's try that one please

Sorry, the same problem

Well, no more idea of what's going on for now...
Anyway, the interesting (for current purpose) part of patch works and proven nothing was wrong with EDIDs.
Now you should more focus on returning mainboard to sender imho

hehe no Problem, anyway thanks for your help