Can you talk about this upgrade process from EB3 to EB2 for pending I-485? Does it need another I-485 application or just a letter to USCIS?
You can always go up and you can always go down as long as your PERM was filed as an EB-2. If you filed your PRM as an EB-3 then you're not going to be able to upgrade to EB-2. But if your PERM was filed as an EB-2 you can downgrade I-140 EB-3. You can go back upgrade to EB-2 if you already have an EB-2 approval. You can file a downgrade second case as EB-3 with the same PERM. FAQ in detail...
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