download corrupted, won't boot to install

I have redownloaded and rewrote the USB installer twice and have gotten nowhere. The boot to installer simply reboots, no messages. Trying to install 15.1 on MacBookPro10,1 by taking the most recent redownload of the installer and simply running it on the desktop. Not having a good time with 2.1.2 so far...

submitted by /u/anthrem
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