Try this without inserting the sim. Did one for a friend a few years back and I think the last step got me into the unlock menu where I entered the code.
1) Alright then please remove the SIM card and try this code ###825*09#,
2) Got the prompt for code? Please enter the code you received,
3) Failed above, try *983*8284# to access the Unlock Menu,
4) Failed above, finally try *983*865625# to access the Unlock Menu.
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