I did not file taxes for 2014, and i was not considered "us resident for tax purposes".Today i am, if i want to file for 2014 should i do it as F-1 foreign or US resident

[No-name]

I have lived over 5 years, in the United States under F-1 Visa. so i am " US resident for tax purposes"

[LinaJ2018]

When did you first enter the US?  

[No-name]

25 December 2012

[LinaJ2018]

Please see the answer below.

[LinaJ2018]

If you first enter the US in 2012, you are considered as a nonresident for five years ( 2012-2016).  Starting from January 1, 2017, if you stay more than 183 days within the US, you are a resident for tax purposes.  If that applies, you will file your 2017 taxes as a resident, not an F-1 foreigner.  As far as 2014, you are a nonresident and is required to file a Form 1040-NR reporting US source income only.  You will file as a nonresident (F-1 foreigner).  As TurboTax does not support nonresident filing, you would need to contact www.sprintax.com.  

[No-name]

what about 2014? if i want to do it now? i haven't done it before

but now i am no longer considered F-1 foreigner, since have been here for more than 5 years

[LinaJ2018]

Please see my edited answer above.  I have added some info.