Interoperability between 1522 and 1510 is supported in 4.1.192.35. However, if you plan to add 1522 aps in your network with this version or upgrade from 4.1.190.5 to 4.1.192.35,then you would need to set the boot variable on the 1522 AP. Please go over this release note document for 4.1.192.35 that explains how to set the boot variable on the 1522 AP:
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