If you mean SonoffLAN custom component then it is not reflashing anything so not dependent on chip.
https://github.com/AlexxIT/SonoffLAN
However, if you mean only flashing existing tasmota-zbbridge or tasmota32 and esphome firmware images to access the Zigbee module on these then of course those already precompiled firmware images will not work as they were either built for the previous ITead Sonoff ZBBridge (with ESP8266/ESP8285) or standard ESP32 dev boards respectively and just as importantly they were built for boards with a slightly different pinouts mapping which will make old images not made for these use the wrong pins.
What I meant was that the new ITead Sonoff ZBBridge is based on a standard ESP32-DOWD-V3 (which I believe is the same chip as the generic Espressif ESP-WROVER-KIT development board and Espressif ESP32 Dev Module / Espressif ESP32-WROVER-E module) so it should, in theory, be possible to just flash a generic esphome and/or tasmota32 build image and try to figure out the pinout used by this device, then start developing from there, so obviously you need to be able to make builds yourself and code some if want to get started playing with Tasmota or ESPHome on this today:
https://tasmota.github.io/docs/ESP32/
"Tasmota32 is initially developed and tested with the dual core ESP32-D0WD-V3 and later expanded to include single core or PSRAM versions."
Generic builds would of course then not get the Zigbee2Tasmota bridge or serial stream server as that is not included out-of-the-box but it would act as the first proof of concept to see if can even flash Tasmota32 and/or ESPHome. So you would not be able to practically use it yourself unless you learn to make custom builds yourself with external components.
https://esphome.io/devices/esp32.html
“All devices based on the original ESP32 are supported by ESPHome. Simply select ESP32 when the ESPHome wizard asks you for your platform and choose a board type from this link when the wizard asks you for the board type.”
What he meant was that there are no precompiled firmware images available for it as yet for this brand new product. But if what digiblur said in this video is correct and the firmware is not locked then there is nothing technically stopping you from building and compiling yourself then flashing that to the ESP32.
Not having locked firmware means that there is nothing holding back developers from hacking these to flash different firmware, and after it it hacked/flashed with different firmware then hackers/developers can try to figure out the pinouts (GPIO pins) used for the Zigbee module. So some coding is needed.
Once those with ESP32 development experince have hacked these and got access to the Zigbee module then they will probably release prebuilt images that anyone can flash themself.
Devs should be able to build own firmware following ZB-GW03 guides as hardware is very similar. See:
https://templates.blakadder.com/ewelink_ZB-GW03
https://thehelpfulidiot.com/a-wired-sonoff-zigbee-alternative
and
https://github.com/syssi/esphome-zb-gw03/blob/main/docs/flashing.md
What is missing is a pinout mapping which can be figured out by tracing the paths on the PCB boards.
