I have :
AT+RST
OK
ets Jan 8 2013,rst cause:2, boot mode:(3,7)
load 0x40100000, len 1396, room 16
tail 4
chksum 0x89
load 0x3ffe8000, len 776, room 4
tail 4
chksum 0xe8
load 0x3ffe8308, len 540, room 4
tail 8
chksum 0xc0
csum 0xc0
2nd boot version : 1.4(b1)
SPI Speed : 40MHz
SPI Mode : QIO
SPI Flash Size & Map: 8Mbit(512KB+512KB)
jump to run user1 @ 1000
????MEM CHECK FAIL!!!
?sl??r?
Ai-Thinker Technology Co. Ltd.
ready
AT+GMR
AT version:0.25.0.0(Jun 5 2015 16:27:16)
SDK version:1.1.1
Ai-Thinker Technology Co. Ltd.
Jun 23 2015 23:23:50
OK
AT+CWLAP
+CWLAP:(0,"elettricista",-83,"00:0c:f6:3c:b6:0a",10)
+CWLAP:(4,"ZyXEL2920r",-86,"c8:6c:87:62:3c:74",13)
OK
AT+CWJAP="elettricista","calabria"
+CWJAP:1
FAIL
help me, thank you