topic Re: Xperia Z1 Bootloader Unlock Problem in XPERIA archive

Xperia Z1 Bootloader Unlock Problem

Foddersin — Mon, 03 Mar 2014 12:36:03 GMT

Hi.

I have been having problems trying to unlock the boot loader on my Z1.

I followed the instructions provided by Sony to unlock. I had previously unlocked and relocked the device.

However now when following instructions again I am given the following errors:

FAILED (remote: Command did not succeed)

And after this,
FAILED (remote: Device is already rooted)

Even though it is not and service menu says,

Boot Loader Unlock Allowed: Yes

Any help is appreciated.

Thanks.

Sent from my C6903 using Tapatalk

Re: Xperia Z1 Bootloader Unlock Problem

Thommo — Mon, 03 Mar 2014 14:05:47 GMT

Have you enabled USB Debugging

Re: Xperia Z1 Bootloader Unlock Problem

Juliannico111 — Mon, 07 Jul 2014 14:31:14 GMT

try this

Originally Posted by [NUT]

first of all, boot your phone and connect it to usb. Then run adb devices in a CMD window. Note down the serial, you will need it.

Okay, in the flashtool folder, check if

[FLASHTOOL FOLDER]/custom/mydevices/[DEVICE SERIAL]/ulcode.txt

exists.

If not, create the folders along the way there and then use notepad or something very lightweight to create the ulcode.txt. Put in the code, be sure to enter the code without the 0x, so just the code as it came from Sony. Save the file and start FlashTool.

Now the BLU button should offer to unlock again, but there is a difference: it will now use the serial and code to wipe the lock using the FT relock/unlock method. Without that file in place it will use the fastboot method.

worked for me!

Re: Xperia Z1 Bootloader Unlock Problem

freekzak2 — Mon, 06 Oct 2014 20:51:24 GMT

thank you

This worked for my z1 🙂