whats my PDA?

hey gus i try to root my samsung galaxy s5 which i bought from amazon a month a go: amazon.co.uk/gp/product/B00ISQWBEG?psc=1&redirect=true&ref_=oh_aui_detailp age_o00_s00

but i was failed to root my phone ended up bricking my phone i think because it stuck at samsung galaxy s5 logo and at the top it says:
RECOVERY BOOTING....
RECOVERY IS NOT SEANDROID ENFORCING
SET WARRANTY BIT: recovery

now i want to install SAMASUNG stock firmware but i dont know which one to install as i dont know how to get my PDA number :( because i cant go to my settings :(

my model is: SM-G900F
SSN: -G900FGSMH
FCC ID: A3LSMG900F

Please help me find my PDA number and link to the firmware file :)