Dear Abhi,

Yes, you can apply for IIESR admission through both JEE Advanced and SCB Channel. 

IISER 2019 Admission will be based on three channel- SCB (State and Central Boards Channel), KVPY exam (Kishor Vaigyanik Protsahan Yojana) & JEE Advanced exam. Candidates are allowed to apply for all the three channels but they must fulfil the eligibility criteria of each channel they are applying.

You must get a rank within 10,000 in Common Rank List in JEE Advanced to qualify for Interview.