hi
There are 2 algorithms, e155 1550 older gen, i think your one is new algoritham
doesn't matter. i'll help you,
http://huaweicodecalculator.com/new-algo/
you can use above link, it is working, first you should sign in with your google account
gmail
then it shows the space to enter your IMEI no, it is mensioned near the sim card socket in your dongle, it is 16 digit no
enter it
the page shows old algo pass, flash code also you no need those, write down new algo no which is has 8 digits
it is your unlock code enter it in your dongle with unsupport simcard.
if you need old algo code generator also with me i'll give it.