Can't unlock boot loader or flash stock

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noggin-the-nog

Member
Jul 21, 2008
26
4
Exeter
Hi there,
Has anyone got a way out of this.....
I have a rooted C1905 that I have been playing around with. I want to try CM11 but boot loader unlock fails with a "FAILED (unknown status code)" report after I send my unlock code. I then thought I'd flash back to stock using S.U.S. but that fails too saying that I have a customized rom... which I don't!!! I seem to be stuck! is there anyway to force a stock flash?

Cheers :(
 
mbc07

mbc07

Senior Member
Dec 12, 2013
834
1,004
28
Sony Xperia M
Sony Xperia X
Have you checked if your bootloader can be unlocked? Go to the dialer, type *#*#7378423#*#* then go to Service info => Configuration. In rooting status, it should say "Bootloader unlock allowed: yes", otherwise it won't work. About your flashing problem, try connecting the phone directly in flash mode before opening SUS, by turning off your phone, holding Volume Down and plugging USB cable or by flashing a FTF file through Flash Tool...
 
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noggin-the-nog

Member
Jul 21, 2008
26
4
Exeter
Thanks guys... I've managed to Flash back to stock with flashtool and I'll try the unlock the boot again. (boot unlock = Yes).
:fingers-crossed:
 
N

noggin-the-nog

Member
Jul 21, 2008
26
4
Exeter
noggin-the-nog said:
Thanks guys... I've managed to Flash back to stock with flashtool and I'll try the unlock the boot again. (boot unlock = Yes).
:fingers-crossed:
Click to expand...
Click to collapse

Flashed an FTF of the latest but still can't unlock the bootloader. still get "unknown Error" and it wipes my apps.
Also can't use "repair my phone" on PCC as it says I have a Customised Rom, could this be due to me trying tools like flashgordon and debloat/deoxing flashing or routing? if so how can I get back to a stock state for a UK XM so I can start again? :(
 
Antrikos48

Antrikos48

Senior Member
Oct 18, 2013
307
154
Nicosia
noggin-the-nog said:
Also can't use "repair my phone" on PCC as it says I have a Customised Rom, could this be due to me trying tools like flashgordon and debloat/deoxing flashing or routing? if so how can I get back to a stock state for a UK XM so I can start again? :(
Click to expand...
Click to collapse

Nope, but try this anyway.
1. Disconnect your phone and turn it off but keep the cable attached
2. Open PCC and go to Update
3. When it says no device found click the blue repair link
4. Choose Xperia M when asked to
5. Follow the instructions

I have a locked bootloader and modified ROM and it works flawlessly. Keep us updated

This message was brought to you from my Sony Xperia M C1905 using Tapatalk.
 
N

noggin-the-nog

Member
Jul 21, 2008
26
4
Exeter
Antrikos48 said:
Nope, but try this anyway.
1. Disconnect your phone and turn it off but keep the cable attached
2. Open PCC and go to Update
3. When it says no device found click the blue repair link
4. Choose Xperia M when asked to
5. Follow the instructions

I have a locked bootloader and modified ROM and it works flawlessly. Keep us updated

This message was brought to you from my Sony Xperia M C1905 using Tapatalk.
Click to expand...
Click to collapse

Hi there,

Thanks for the help, unfortunately it doesn't work! PCC recognises my phone ok so I carried on to the "repair my phone" tab.

and this is what I get after it's downloaded the firmware and tries to flash it... :(
 

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mindyabiznis

Senior Member
Oct 16, 2011
374
57
Antrikos48 said:
Nope, but try this anyway.
1. Disconnect your phone and turn it off but keep the cable attached
2. Open PCC and go to Update
3. When it says no device found click the blue repair link
4. Choose Xperia M when asked to
5. Follow the instructions

I have a locked bootloader and modified ROM and it works flawlessly. Keep us updated

This message was brought to you from my Sony Xperia M C1905 using Tapatalk.
Click to expand...
Click to collapse

Hey fella, what ROM are you using? ive got a locked bootloader and looks as though i wont ever be able to work around this :/ so looking at other possibles before i give in and get a z1 compact.
 
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    mbc07
    mbc07
    Have you checked if your bootloader can be unlocked? Go to the dialer, type *#*#7378423#*#* then go to Service info => Configuration. In rooting status, it should say "Bootloader unlock allowed: yes", otherwise it won't work. About your flashing problem, try connecting the phone directly in flash mode before opening SUS, by turning off your phone, holding Volume Down and plugging USB cable or by flashing a FTF file through Flash Tool...
    View
    1
    G
    giridhargp
    It happened to me also ,check your IMEI CODE,you need to send first 14 digits of your IMEI,

    Sent from my C1905 using XDA Premium 4 mobile app
    View
    1
    Antrikos48
    Antrikos48
    noggin-the-nog said:
    Which is strange as at no time have I ever tried to unlocked it!!! I guess if I lock it again I can try a stock flash!

    Thanks for your help again.
    :)
    Click to expand...
    Click to collapse

    If you lock it then PCC should work fine again

    This message was brought to you from my Sony Xperia M C1905 using Tapatalk.
    View
    1
    G
    giridhargp
    noggin-the-nog said:
    Which is strange as at no time have I ever tried to unlocked it!!! I guess if I lock it again I can try a stock flash!

    Thanks for your help again.
    :)
    Click to expand...
    Click to collapse

    See mine it's unlocked

    Sent from my C1905 using XDA Premium 4 mobile app
    View

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