Module don't work after change baudrate

[eng.tavakoli110]

Hello
I did change baudrate of esp-07 module to 1200 trough AT-command with following command :

AT+UART_DEF=1200,8,1,0,0

but it didn't work any more .

I did change wiring to boot to bootloader and did change baudrate of PC-software to 74880 to saw boot log but module print unreadable (but formatted) log after restart, like this :
G
ÄZˆQ@@XdY…gÌQ+kCP@öoÔWJ5•V™DD
or
GÄZˆQ@@XdY•gÌQ;kCPPöÔWJ5•V™DT

I was changing baudrate to all possible values but it don't work.

I did try to re-flash module anyway but it wasn't successful.

What can i do to recovery my module?

Thanks

[Her Mary]

You should try AT+UART_CUR first, if it works fine, then set AT+UART_DEF into flash, if it causes any problem, it can be recovered by reboot.
But you set AT+UART_DEF directly, I think the only way is to re-flash the board. Maybe you can have a try with the latest download tool. https://www.espressif.com/en/support/do ... ther-tools

[eng.tavakoli110]

Problem was due to my USBtoTTL module that didn't works with 74880 baud rate correctly. I changed it and it printed boot log messages correctly but i was not able to flash it yet so i removed the wires which was connected trough socket to USBtoTTL and then solder new wires instead them then my module was program successfully.

Thanks for your replays