Update looks like ota zip package, because when i added .zip to file extenction & opened it with winrar, I see meta-inf folder & in right size is writen ,,signed by Moto-SignApk. When i oppened renamed file i get error that zip is corruped, so i don't how we'll able to use that file without moto-signing keys..
Archive: defyxt_rw_update_1_65K_1027.zip
signed by Moto-SignApk
warning [defyxt_rw_update_1_65K_1027.zip]: 166614 extra bytes at beginning or within zipfile
(attempting to process anyway)
error [defyxt_rw_update_1_65K_1027.zip]: start of central directory not found;
zipfile corrupt.
(please check that you have transferred or created the zipfile in the
appropriate BINARY mode and that you have compiled UnZip properly)
The way I got the ZIP was by connecting my phone to my computer's custom wifi network and captured all packets that came from the phone and to the phone through my computer using wireshark. I then found the end of the file download where wireshark has reassembled the "TCP Segments" and exported that to a file deleting the HTTP header which ends at \r\n\r\n. I did not delete the NULL byte after the new line. Looking at what segments were assembled individually, it is not including the TCP header information, it's just including the payload.
All of that being said... I do not know rather or not wireshark assembled it correctly. I am willing to provide my pcap file after I obscure things identifying my device.