New PSK format

[countcobolt]

Hi all

I am trying to flash a BSD34 smart socket. I have downloaded the latest tuya master built using git. Working on an RPI 3B. I can connect the socket using the normal smart life app. I did this after I absolutely could not manage to flash it at first (still cant). Decided to dive a bit deeper into it today and found this:

In smarthack-psk.log I have a ton of entries as following

new client on port 443 from 10.42.42.20:53000
ID: 0242416f68626d64366147393149465231509241f729c9f0af3aa41e355b7cbeb1ece63da6ff54b74f271af0ef044466e6
PSK: d9488a1b4524ae3e31acd0342e6d0b2eedbb5d55e957a9a51073b95e36ab1c5c
('could not establish sslpsk socket:', SSLError(1, u'[SSL: DECRYPTION_FAILED_OR_BAD_RECORD_MAC] decryption failed or bad record mac (_ssl.c:727)'))
new client on port 443 from 10.42.42.20:5371
ID: 0242416f68626d64366147393149465231509241f729c9f0af3aa41e355b7cbeb1ece63da6ff54b74f271af0ef044466e6
PSK: d9488a1b4524ae3e31acd0342e6d0b2eedbb5d55e957a9a51073b95e36ab1c5c
('could not establish sslpsk socket:', SSLError(1, u'[SSL: DECRYPTION_FAILED_OR_BAD_RECORD_MAC] decryption failed or bad record mac (_ssl.c:727)'))

My smartphone and device are actually connecting to the acces point. In smarthack-wifi.log you see

wlan0: AP-STA-DISCONNECTED ac:57:75:99:f2:9f
wlan0: AP-STA-CONNECTED ac:57:75:99:f2:9f
wlan0: AP-STA-CONNECTED c4:4f:33:bc:10:c6
wlan0: AP-STA-DISCONNECTED ac:57:75:99:f2:9f
wlan0: AP-STA-CONNECTED ac:57:75:99:f2:9f
wlan0: AP-STA-DISCONNECTED ac:57:75:99:f2:9f
wlan0: AP-STA-CONNECTED ac:57:75:99:f2:9f

The AC mac is my smartphone, while the C4 is the actual device I am trying to flash.

The mqtt log remains quite virgin

1578041479: mosquitto version 1.5.7 starting
1578041479: Using default config.
1578041479: Opening ipv4 listen socket on port 1883.
1578041479: Opening ipv6 listen socket on port 1883.

as does the UDP log

Listening for Tuya broadcast on UDP 6666
Listening for encrypted Tuya broadcast on UDP 6667

Smarthack-web.log does not give me more either
Listening on 10.42.42.1:80

I have browsed and google for hours now and mostly I find that this might be due to not using the ESP8x chip. Yet funnily enough, when I simply configure them using the smart life app, I see them in my network as ESP_some_ref_number in it. And it does get an IP address.

The socket looks like this

Any clues on why the SSL error shows up?
Using openssl 1.1.1d / Python 2.7.16 and 3.7.3

Kind regards
Steve

[rsbob]

Runs on fw 1.1.4 in smarlife app


Have the same issue.ssl 1.1.1d and python 2 and 3 .have to flash with soldering. Esp chip is mounted.
For to open the smart plug you have to eat first Southtirolean Speckknödl😂

[countcobolt]

Runs on fw 1.1.4 in smarlife app


Have the same issue.ssl 1.1.1d and python 2 and 3 .have to flash with soldering. Esp chip is mounted.
For to open the smart plug you have to eat first Southtirolean Speckknödl

Just wondering did you just pull really hard on it or what is the trick to open it? Turn? Worried to break them

[rsbob]

moved a screwdriver into one hole and then leveraged.nothing breaks

[countcobolt]

A few more stupid questions :
1: did you solder on the bottom or on the dots?
2: did you connect the gnd to reset?
3: which tasmota did you put on it?

Thanks a lot in advance :)

[rsbob]

2 screws in total.hav no usb serial programmer here.its on the way ... only ioo to ground .the rest on grenn pcb .from right to left.....3.3 gnd......

[kueblc]

Hi @countcobolt and @rsbob, it looks like you may have discovered a new version of the Tuya firmware. The PSK identity in your psk log does not have the expected prefix, which explains why the calculation is failing.

If you are flashing by wire, could you please make a backup of the stock firmware? We can use this to further debug and possibly develop a new workaround.

[countcobolt]

@kueblc
Ok I have it open and will try tomorrow morning. A few stupid questions (I am on Linux or Mac) do you have some tutorials on how to download the existing firmware?

Kind regards

[rsbob]

https://github.com/espressif/esptool
https://github.com/espressif/esptool/blob/master/README.md

[kueblc]

Once you have it installed you can use something like:

esptool.py read_flash 0 0x100000 firmware-backup.bin

[rsbob]

flashed now ...
esptool.py --port /dev/ttyS0 flash_id
esptool.py --port /dev/ttyS0 read_flash 0x00000 0x100000 image1M.bin
esptool.py --port /dev/ttyS0 erase_flash
esptool.py --port /dev/ttyS0 write_flash -fs 1MB -fm dout 0x0 tasmota-DE.bin

#

@kueblc

[rsbob]

Here the orig.FW
BSD34--image1M.zip

[countcobolt]

@rsbob which. pin did you connect the GPIO0 on? I have CW, R and then 00 in one line (or similar (can't really read it properly on them)) Thanks

Steve

[rsbob]

gpi0 (esp pcb side soldered to ground ,then give voltage and run commans )Green pcb . 3,3 volt Gnd rx tx on the main platine side . yellow cable to the the blue ones.see foto.
i think its printed IO