Abstract: Apparatus and methods are provided to reduce warpage of an integrated circuit package while reflowing solder to couple a first substrate of a first electronic device with a second substrate or second electronic device. In an example, the method can include placing an anti-warpage fixture onto the first electronic device to provide a captured electronic device, placing the captured electronic device and the anti-warpage fixture on the second substrate, and reflowing the captured electronic device to the second substrate. In certain examples, the method can include limiting a clearance distance between the first substrate and the second substrate to a minimum distance.