[COMPATIBILITY] Cortet ZM3588S-USB or ZM357S-USB EM35x USB Sticks by CEL?

[Hedda]

Just a curious question as I do not actually own any of these myself and do not plan on buying them, nor recommend them myself:

Anyone tested if these "Cortet" EM3588 / EM357 based radios from CEL can be flashed/updated via walthowd's husbzb-firmware?

Anyone tried to flash them with newer EmberZNet firmware to upgrade them? https://github.com/grobasoz/zigbee-firmware

grobasoz mentioned he tested his EM3581 firmware image on another EM3588 based adapter he had and it worked for him.

Note! This may require defining a baud rate of 115200 instead of 57600 which I believe is the baud rate on the default firmware(?).

"MeshConnect" EM35x based USB sticks/dongles/adapters in the "Cortet" series by CEL (California Eastern Laboratories):

CEL Cortet ZM3588S-USB (EM3588 / EM358x Zigbee chip by Silicon Labs)

CEL Cortet ZM357S-USB (EM357 / EM357x Zigbee chip by Silicon Lab)

Also, they have matching +20dBm models in LR (long-range) versions however they had some hint that may ship Thread firmware:

CEL Cortet ZM3588S-USB-LR (EM3588 / EM358x Zigbee chip by Silicon Lab)

CEL Cortet ZM357S-USB-LR (EM357 / EM357x Zigbee chip by Silicon Lab)

https://github.com/zigpy/zigpy/files/6409608/3388832429388690em357_usb_sticks_ds.pdf

They are not very expensive today and seem to be sold all around the world by quite a lot of major electronics distributors.

The official Ember documentation from CEL says they support Silicon Labs EmberZNet PRO ZigBee stack and serial interface:

http://www.cel.com/pdf/datasheets/EM357_USB_Sticks_DS.pdf

http://www.cel.com/product.do?command=viewOverview&group=6

https://github.com/zigpy/zigpy/files/6409608/3388832429388690em357_usb_sticks_ds.pdf

I'm not asking for buying advice as already have other adapters but only requesting info for reference and compatibility lists:

https://www.home-assistant.io/integrations/zha/

PS: I first found out about these reading the OpenHAB Supported Coordinators under their ZigBee Binding documentation:

https://www.openhab.org/addons/bindings/zigbee/

"57600bps
Software flow control
High RAM"