ESP8266 AT Commandes problèmes

I have a problème when i put "AT+CWMODE=1" or AT+CWJAP" it work like AT+RST, can you help me?

Here is the code :
AT+CWMODE=1

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 : DIO
SPI Flash Size & Map: 8Mbit(512KB+512KB)
jump to run user1 @ 1000

óan't use rtc mem data
slŽƒrlÌÿ
Ai-Thinker Technology Co.,Ltd.

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