how to download upneet allotment letter ?

You will have to login to get the same as if you have completed all the process.

Steps are given below -
Seat Allotment:
a. Login to website. Your seat allotment status will be displayed.
b. If you choose to accept the Allotment youll be asked to pay refundable security fee of Rs
20,000/- (Rs. Twenty Thousand only)
2,00.000/- (Rs. Two lac only)
c. Once online payment is done, you can download the allotment later.
d. If you dont choose to accept
round of counseling.
e. If you accept the allotment letter
i. but dont join or resign after joining even then youre eligible for next counseling
but will forfeit your security deposit
ii. and join the college youll remain eligible for next counseling to upgrade your
seat without losing your seat.

Hope this helps!!!