need to make 6100 sim free

[lollypop]

hey,
i need help to make a 6100 sim free

imei: 350991206220382
v 04.01
NPL-2
locked to the O2 ireland network


have already tried the following codes and have only got the message "cannot undo restriction" or "code error"

#pw+825051041302054+1#
#pw+818451436616157+2#
#pw+423467642166760+3#
#pw+786470007436572+4#
#pw+043073767102577+5#
#pw+796100611453206+6#
#pw+983222606124520+7#

thanks

[radicaluk]

#pw+973222606124520+7#

enter with no sim in fone m8