KC868-A8 only with standard tasmota firmware possible

[DieterN]

Hello all
I have flashed my KC868-A8 with Tasmota32.de fw.(https://tasmota.github.io/install/)
it works.

When I will flah the KC868-A8 firmware(KC868-A8-Tasmota-firmware.bin) with this tool,
I get an error like this:
   

and the board has no function.
Then i use the tasmota.de fw again, flash works but without

Configuration - Configure PCF8574  menu.
So i cant use the relais
Please help.
best regards

[admin]

do as this: https://www.kincony.com/forum/showthread.php?tid=1128

[DieterN]

do as this: https://www.kincony.com/forum/showthread.php?tid=1128

hello
I have done this exactly with this flash tools:
1. Tasmota web UI
2. flash_download_tool_3.9.2

with this bin file: KC868-A8-Tasmota-firmware.bin from your mentiond side.

Only the original fw tasmota.de works AND the original FW KCS_KC868_A8_V2.2.2.bin

With the fw KCS_KC868_A8_V2.2.2.bin the MQTT interface works, but I can't access the relais.
I see only this:
   

[admin]

do you means use KCS firmware can't control relay?

[DieterN]

do you means use KCS firmware can't control relay?

yes.
the fw: KCS_KC868_A8_V2.2.2.bin  is OK
but I need the Tasmota
so the fw from your mentiond side( KC868-A8-Tasmota-firmware.bin ) is not possible to flash
see my post above

[admin]

you can download from tasmota webpage, compile online (enable PCF8574 option)

[DieterN]

you can download from tasmota webpage, compile online (enable PCF8574 option)

sorry, but I don't know how it works?
Which version?, how can I enable PCF8574 option?
I need urgent help

and do you think, this is not working: ""do as this: https://www.kincony.com/forum/showthread.php?tid=1128 ??""
two different methods. Why?