Hi Charitha,
There is no other way to download the original admit card of IIT ADVANCED; if you have a copy of it in your mail or somewhere you can take it out. Even if you remember your roll number/registration number for JEE ADVANCED and have your JEE MAINS ADMIT CARD then you can explain the reasons.
Try contacting the authorities as soon as possible.
You can surely download admit card again from following link:
https://engineering.careers360.com/articles/jee-advanced-admit-card
Make sure you take 2 print out as its nost important document for counselling.
Studnets can log on to website and enter all details to download it. Make sure you use Google chrome browser and stable internet connection to avoid hassle.
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