Firmware for the Grove - UART Wifi V2 with ESP8285

Products & Technology Grove
#1

Hi,
I tried to update the Grove UART Wifi V2 AT firmware to the latest 2.2 release without success.
I ended up messing up with chip firmware, and now my board is bricked.
I tried to restore the firmware by using the procedure described here: Grove - UART Wifi V2 - Seeed Wiki
However, the device refuses to boot:

load 0x40100000, len 1396, room 16
tail 4
chksum 0xef
load 0x00000000, len 0, room 4
tail 0
chksum 0xef
ho 12 tail 0 room 4
load 0x00000000, len 0, room 12
tail 0
chksum 0xef
csum 0xef
csum err
ets_main.c

Is there someone that can confirm me the firmware available on the Seedstudio wiki works correctly even with the ESP8285 in V2 of the Grove-UART board?

Thanks in advance.

#2

Ok, i found the issue which was related to the different SPI MODE of the embedded SPI memory in the ESP8285, which must be set to DOUT.

But, as I suspected, the firmware on the product page is very outdated:

AT+GMR


AT version:0.24.0.0(May 22 2015 19:20:14)

SDK version:1.1.0

SeeedStudio
           compile time:Jun  1 2015 15:46:19

Where can I download the stock firmware (1.6 if I’m not wrong) shipped with the module?

#3

I finally fixed the board by setting up the ESP8266-RTOS-SDK toolchain and by compiling the ESP-AT 2.2.0 release.
If interested in updating the Grove-UART WiFi V2 firmware, you can refer to this post on my blog