Help running espruino on the F401 Nucleo

Well, that one flashed correctly and run only through st-link, never by drag and drop.
So I didn't checked further...
The official one did not flash through the standard copy/paste under windows 8.1 64 bits.
That said, it flashed using st-link utility and runs from the web ide.

Screen capture with both @DrAzzy and official Espruino for NucleoF401RE board.

Connected
>
=undefined
>echo(0);
<<<<<{"VERSION":"1v81.79","BUILD_DATE":"Oct 18 2015","BUILD_TIME":"00:27:36","GIT_COMMIT":"d19c544b8a0e247524f41bf490fee7eb03fb387c","BOARD":"NUCLEOF401RE","CHIP":"STM32F401RET6","CHIP_FAMILY":"STM32F4","FLASH":524288,"RAM":98304,"SERIAL":"56005b00-0b513333-37343534","CONSOLE":"Serial2","EXPORTS":{"jsvLock":6661,"jsvLockAgainSafe":6625,"jsvUnLock":6573,"jsvSkipName":193093,"jsvMathsOp":17313,"jsvMathsOpSkipNames":115589,"jsvNewFromFloat":202021,"jsvNewFromInteger":202089,"jsvNewFromString":33209,"jsvNewFromBool":202045,"jsvGetFloat":79457,"jsvGetInteger":193809,"jsvGetBool":139461,"jspeiFindInScopes":93809,"jspReplaceWith":178577,"jspeFunctionCall":171857,"jspGetNamedVariable":89277,"jspGetNamedFie
Connected
>ld":58009,"jspGetVarNamedField":57625,"jsvNewWithFlags":197489}}>>>>>
=undefined
=undefined
>echo(0);
<<<<<{"VERSION":"1v81.79","BUILD_DATE":"Oct 18 2015","BUILD_TIME":"00:27:36","GIT_COMMIT":"d19c544b8a0e247524f41bf490fee7eb03fb387c","BOARD":"NUCLEOF401RE","CHIP":"STM32F401RET6","CHIP_FAMILY":"STM32F4","FLASH":524288,"RAM":98304,"SERIAL":"56005b00-0b513333-37343534","CONSOLE":"Serial2","EXPORTS":{"jsvLock":6661,"jsvLockAgainSafe":6625,"jsvUnLock":6573,"jsvSkipName":193093,"jsvMathsOp":17313,"jsvMathsOpSkipNames":115589,"jsvNewFromFloat":202021,"jsvNewFromInteger":202089,"jsvNewFromString":33209,"jsvNewFromBool":202045,"jsvGetFloat":79457,"jsvGetInteger":193809,"jsvGetBool":139461,"jspeiFindInScopes":93809,"jspReplaceWith":178577,"jspeFunctionCall":171857,"jspGetNamedVariable":89277,"jspGetNamedField":58009,"jspGetVarNamedField":57625,"jsvNewWithFlags":197489}}>>>>>
=undefined
>reset();
=undefined
 _____                 _
|   __|___ ___ ___ _ _|_|___ ___
|   __|_ -| . |  _| | | |   | . |
|_____|___|  _|_| |___|_|_|_|___|
          |_| http://espruino.com
 1v81.79 Copyright 2015 G.Williams
>Loading -134610944 bytes from flash...
>
Disconnected
>
Connected
>
=undefined
>echo(0);
<<<<<{"VERSION":"1v81","BUILD_DATE":"Oct  8 2015","BUILD_TIME":"16:05:33","GIT_COMMIT":"8e1efcf898350a290242d732631be15c36f53381","BOARD":"NUCLEOF401RE","CHIP":"STM32F401RET6","CHIP_FAMILY":"STM32F4","FLASH":524288,"RAM":98304,"SERIAL":"56005b00-0b513333-37343534","CONSOLE":"Serial2","EXPORTS":{"jsvLock":13789,"jsvLockAgainSafe":13777,"jsvUnLock":13753,"jsvSkipName":82997,"jsvMathsOp":50761,"jsvMathsOpSkipNames":128593,"jsvNewFromFloat":156705,"jsvNewFromInteger":157117,"jsvNewFromString":158673,"jsvNewFromBool":157045,"jsvGetFloat":59457,"jsvGetInteger":84653,"jsvGetBool":86897,"jspeiFindInScopes":159837,"jspReplaceWith":86581,"jspeFunctionCall":175133,"jspGetNamedVariable":124777,"jspGetNamedFi
Connected
>eld":42141,"jspGetVarNamedField":87629,"jsvNewWithFlags":156473}}>>>>>
=undefined
>echo(0);
<<<<<{"VERSION":"1v81","BUILD_DATE":"Oct  8 2015","BUILD_TIME":"16:05:33","GIT_COMMIT":"8e1efcf898350a290242d732631be15c36f53381","BOARD":"NUCLEOF401RE","CHIP":"STM32F401RET6","CHIP_FAMILY":"STM32F4","FLASH":524288,"RAM":98304,"SERIAL":"56005b00-0b513333-37343534","CONSOLE":"Serial2","EXPORTS":{"jsvLock":13789,"jsvLockAgainSafe":13777,"jsvUnLock":13753,"jsvSkipName":82997,"jsvMathsOp":50761,"jsvMathsOpSkipNames":128593,"jsvNewFromFloat":156705,"jsvNewFromInteger":157117,"jsvNewFromString":158673,"jsvNewFromBool":157045,"jsvGetFloat":59457,"jsvGetInteger":84653,"jsvGetBool":86897,"jspeiFindInScopes":159837,"jspReplaceWith":86581,"jspeFunctionCall":175133,"jspGetNamedVariable":124777,"jspGetNamedField":42141,"jspGetVarNamedField":87629,"jsvNewWithFlags":156473}}>>>>>
=undefined
>reset();
=undefined
 _____                 _
|   __|___ ___ ___ _ _|_|___ ___
|   __|_ -| . |  _| | | |   | . |
|_____|___|  _|_| |___|_|_|_|___|
          |_| http://espruino.com
 1v81 Copyright 2015 G.Williams
> 

So it seams to be a problem just with those restrictions mentionned above by ST.