Flash from a bin in memory

[zedrummer]

Hello
I have a unique URL where up-to-date version of a binary file to flash to my ESP32 is available.
With a program I coded, I download it in memory and would like to use esptool to flash it to the device but, if possible, without writing the file on the disk. Is it possible (and how) to use esptool to flash an ESP32 with a memory block containing a BIN file, please?
Thanks
David