My code cannot be saved to ESP8266

After enter "save()" .
It show "Erasing Flash.....
Writing............
Compressed 27200 bytes to 10081
Checking...
Do>"
There is no reaction to this step

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if use E.setBootCode('...'); then show module 'ws' not found.
Who know how to save?

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What do you mean no reaction ? Does your board freeze and become unresponsive to any command?
did you try reset() and load() after your save() ?
The save() work perfectly on my 8266 4mb board. It's only the save-on-send that doesnt.
Do you realize that in your code you do not call send() ?
For external modules, like ws, the code need to be uploaded too, for setBootCode to work. Have a look on the log of WebIDE to see how he send the module code too when you use upload button.
Try flashing a previous version of espruino, like 1.91, 1.92 or 1.93, maybe it will help

Thank you very much.
I'll study it.

save() does what it says: saving the code (status of the RAM) intoFllash. When you power-cycle, Espruino restores the code (loads the saved state) and invokes onInit() {...} or E.on("init",function(){...}) registered functions. Personally, I prefer the onInit(){...} because no matter of the code load sequence, I get the sequence I want.

If you do not want to power-cycle, invoke/enter onInit(); from with/in the console, and you get your code started. Read through this conversation about simple explanation how to save code that espruino run on start?.

Thank you very much,you let me learn a lot. ^_^

...@Jessie, thanks for the feedback, makes my <3 and face :)