[howto] Switch boot partitions via micom eeprom C series

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hedak
Posts: 81
Joined: Wed Jan 08, 2014 9:21 pm

Re: C Series EEPROM research

Post by hedak »

OK, thank you! Micom EEPROM has 256 byte (or 2kBit ;) ). Will dump and upload tomorrow :)

hedak
Posts: 81
Joined: Wed Jan 08, 2014 9:21 pm

Re: C Series EEPROM research

Post by hedak »

So, here's my micom's EEPROM dump. It's the same in standby and powered on.
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juusso
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Re: C Series EEPROM research

Post by juusso »

heyyy. your eeprom just looks like i have suggested to user to change bytes in eeprom topic.

in your case you have to set it vice versa
LE40B653T5W,UE40D6750,UE65Q8C
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FFB (v0.8), FFB for CI+ . Get root on: C series, D series, E series, F series, H series. rooting K series, exeDSP/exeTV patches[C/D/E/F/H]

DO NOT EVER INSTALL FIRMWARE UPGRADE

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juusso
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Re: C Series EEPROM research

Post by juusso »

77 .... B0 change to CD .... AD
LE40B653T5W,UE40D6750,UE65Q8C
Have questions? Read SamyGO Wiki, Search on forum first!
FFB (v0.8), FFB for CI+ . Get root on: C series, D series, E series, F series, H series. rooting K series, exeDSP/exeTV patches[C/D/E/F/H]

DO NOT EVER INSTALL FIRMWARE UPGRADE

hedak
Posts: 81
Joined: Wed Jan 08, 2014 9:21 pm

Re: C Series EEPROM research

Post by hedak »

jup, but i want to disable the watchdog first :)

But i'm failing right now... Executing 'http://IP/read?format=1&device=80&size=32768' works, but adding the address option neccesary for write command (-> 'http://IP/read?format=1&device=80&size=32768&addr=0') fails reading?! I will investigate the sketch

EDIT: my working teensy sketch can be found here: http://wiki.samygo.tv/index.php5/Ethern ... _interface
Last edited by hedak on Fri Mar 07, 2014 9:47 pm, edited 1 time in total.

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juusso
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Re: C Series EEPROM research

Post by juusso »

unplug from wall after change bytes in micom's eeprom
LE40B653T5W,UE40D6750,UE65Q8C
Have questions? Read SamyGO Wiki, Search on forum first!
FFB (v0.8), FFB for CI+ . Get root on: C series, D series, E series, F series, H series. rooting K series, exeDSP/exeTV patches[C/D/E/F/H]

DO NOT EVER INSTALL FIRMWARE UPGRADE

hedak
Posts: 81
Joined: Wed Jan 08, 2014 9:21 pm

Re: C Series EEPROM research

Post by hedak »

OK, and i will try to write in standby, right? DONE

Please check my dump after changing as supposed. I won't disconnect from wall until you checked and agreed
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juusso
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Re: C Series EEPROM research

Post by juusso »

seem ok. but why don't you change just these bytes instead of full dump?
LE40B653T5W,UE40D6750,UE65Q8C
Have questions? Read SamyGO Wiki, Search on forum first!
FFB (v0.8), FFB for CI+ . Get root on: C series, D series, E series, F series, H series. rooting K series, exeDSP/exeTV patches[C/D/E/F/H]

DO NOT EVER INSTALL FIRMWARE UPGRADE

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juusso
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Forced "toggle" via modify micom eeprom C series

Post by juusso »

Summary:

Switch to 1st boot partition set we have to change as follow:
SpoilerShow
00000000 CD 01 FF 01 FF 04 01 01 00 FF 73 70 61 FF AD FF ?.?.?....?spa?.?
00000010 FF FF 00 FF FF FF FF FF FF FF FF FF FF FF FF FF ??.?????????????
00000020 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF ????????????????

Code: Select all

>> ONBOOT :: 0x81c60204 0x12821284 

1nd Partition !!!!!!!!!!!!!!!!!
To switch to 2nd boot partition set, have to use:
SpoilerShow
00000000 77 01 FF 01 FF 04 01 01 00 FF 73 70 61 FF B0 FF ?.?.?....?spa?.?
00000010 FF FF 00 FF FF FF FF FF FF FF FF FF FF FF FF FF ??.?????????????
00000020 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF ????????????????

Code: Select all

>> ONBOOT :: 0x81c60204 0x12821284 

2nd Partition !!!!!!!!!!!!!!!!!
Case solved. hope this info helps for someone in future.
LE40B653T5W,UE40D6750,UE65Q8C
Have questions? Read SamyGO Wiki, Search on forum first!
FFB (v0.8), FFB for CI+ . Get root on: C series, D series, E series, F series, H series. rooting K series, exeDSP/exeTV patches[C/D/E/F/H]

DO NOT EVER INSTALL FIRMWARE UPGRADE

hedak
Posts: 81
Joined: Wed Jan 08, 2014 9:21 pm

Re: [howto] Switch boot partitions via micom eeprom C series

Post by hedak »

To complete my case i attached both states (1st active and 2nd active) as dumps of my micom EEPROM. Mind attachement comments.

Just for information: if you compare both that dumps with the one i posted previously (Micom_EEPROM_after_toggle_try.zip) you will figure out that the ascii string 'ger' changed to 'eng'. The reason is that tv was set to german before my tv's brick and after unbricking it let me walk through the setup-up steps where i chose englisch to quickly pass that. juuso' dumps show 'spa' so that dumps will most probably have been made on a tv set to spanish :)
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