Is it possible to use dfu bootloader with the stm32wl55 device

[SBaro.11]

I’am working with the stm32wl55 device, now I’am looking how can I update my firmware. I’d like to use dfu bootloader but after reading AN2606 note only USART and SPI bootloader mode are available for stm32wl55, so dfu isn’t available ?

And I’am also looking for ota update, the same I didn’t find any useful informations just FUOTA but for stm32wb.

[TDK]

The STM32WL55 doesn't even have a USB peripheral, so no, USB DFU won't work here.

[SBaro.11]

Ok so I'll have to use USART or SPI. And I think OTA is available but I googled and I didn't find any useful infomrations just fuota is it portable for stm32wl55?