Undid port close+reopen change in commit 4a7f75e since it didn't solve the CrOS v67+ download failure problem.

Author: jeffam70

loader.js

@@ -140,14 +140,10 @@ function loadPropeller(sock, portPath, action, payload, debug) {
             //Set postResetDelay based on platform; ideal Post-Reset Delay = 100 ms; adjust downward according to typically-busy operating systems
             postResetDelay = ((platform === pfWin) && (!experimentalTiming)) ? 60 : 100;
             if (port.connId) {
-                // Connection exists, prep to close it first (to reset it), then open it (fresh)
-                originalBaudrate = initialBaudrate;
-                connect = function() {return closePort(port).then(function() {return openPort(sock, portPath, initialBaudrate, "programming")}).catch(function(e) {return Promise.reject(e)})}
-//                The following temporarily removed (and replaced above) to intentionally close and reopen port in hopes it eliminates the CrOS v67+ failed download problem
-//                // Connection exists, prep to reuse it
-//                originalBaudrate = port.baud;
-//                updatePort(port, {mode: "programming", bSocket: sock});
-//                connect = function() {return changeBaudrate(port, initialBaudrate)}
+                // Connection exists, prep to reuse it
+                originalBaudrate = port.baud;
+                updatePort(port, {mode: "programming", bSocket: sock});
+                connect = function() {return changeBaudrate(port, initialBaudrate)}
             } else {
                 // No connection yet, prep to create one
                 originalBaudrate = initialBaudrate;

serial.js

@@ -140,7 +140,7 @@ function closePort(port, command) {
                             log("Closed port " + port.path + " (id " + port.connId + ")", mDbug);
                             // Clear connection id to indicate port is closed
                             updatePort(port, {connId: null});
-                            setTimeout(resolve, 250);  //Delay resolve() to prevent future openPort() calls from arriving too soon to accommodate
+                            resolve();
                         } else {
                             log("Could not close port " + port.path + " (id " + port.connId + ")", mDbug);
                             reject(Error(notice(neCanNotClosePort, [port.path])));