Problems with V92 and wifi.save() on ESP8266 512K Flash Boards?

tested this images on a ESP8266 12 board

var wifi = require("Wifi");
wifi.connect("xxx", {password:"xxx"}, function(ap){ 
   console.log("connected"); 
  wifi.save()
});

result after reset

>rll|là|lìb|ìrbbònnlnnâìbplrlrlpònàlbnâ|bònnîll`nnl`nrnl`pònàrâàbnâ|ìbònnîl`nnl`nrnlpònàrâàìlbnâ|bònnîl`nnl`nrnl`rnl`rlnònnârnnnlblìlìlll~rlìlllnâllllìlnànìn~llàbìllpbbrìl`nlpìl`bl`lnnânl|bll`rlâìnìròn|ìll`ârlþ

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|   __|___ ___ ___ _ _|_|___ ___
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 1v92 Copyright 2016 G.Williams
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Flash map 4MB:512/512, manuf 0xe0 chip 0x4016
>require("Wifi").getIP();
={
  "ip": "192.168.194.121",
  "netmask": "255.255.255.0",
  "gw": "192.168.194.1",
  "mac": "5c:cf:7f:c1:12:0b"
 }
> 

so it works