Bootloader check!!!

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flinttownbrown

Senior Member
Apr 30, 2013
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I think the standard way is to take a dump of the bootloader and disassemble it using an ARM disassembler.

Then, examine the assembly code for a signature checking function, and if present, check the callers/return value to see if the signature is verified to allow booting upon a mismatch.

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Tikerz

Tikerz

Senior Member
Nov 5, 2005
2,839
654
Mesa, AZ
flinttownbrown said:
I think the standard way is to take a dump of the bootloader and disassemble it using an ARM disassembler.

Then, examine the assembly code for a signature checking function, and if present, check the callers/return value to see if the signature is verified to allow booting upon a mismatch.

Sent from my SGH-M919 using XDA Premium HD app
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Piece of cake!
 
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jaythenut

jaythenut

Senior Member
Sep 6, 2012
7,330
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flinttownbrown said:
I think the standard way is to take a dump of the bootloader and disassemble it using an ARM disassembler.

Then, examine the assembly code for a signature checking function, and if present, check the callers/return value to see if the signature is verified to allow booting upon a mismatch.

Sent from my SGH-M919 using XDA Premium HD app
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just done it now how the .... do i put it back together lol
 
seboj

seboj

Senior Member
Jan 21, 2010
433
55
Atlanta
john0699 said:
Hello, can someone tell me please, how i can check if my bootloader is locked or unlocked?!?

Gesendet von meinem LG-D855 mit Tapatalk
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If you bought your phone from T-Mobile, the bootloader is unlocked. If you bought your phone elsewhere, your bootloader is locked.

Based on your signature, I'm assuming you bought a D855. Here's the bounty thread (temporarily locked) for unlocking its bootloader.
 
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    flinttownbrown
    I think the standard way is to take a dump of the bootloader and disassemble it using an ARM disassembler.

    Then, examine the assembly code for a signature checking function, and if present, check the callers/return value to see if the signature is verified to allow booting upon a mismatch.

    Sent from my SGH-M919 using XDA Premium HD app
    View
    1
    Tikerz
    Tikerz
    flinttownbrown said:
    I think the standard way is to take a dump of the bootloader and disassemble it using an ARM disassembler.

    Then, examine the assembly code for a signature checking function, and if present, check the callers/return value to see if the signature is verified to allow booting upon a mismatch.

    Sent from my SGH-M919 using XDA Premium HD app
    Click to expand...
    Click to collapse

    Piece of cake!
    View

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