The IXUS 185 was released in 2017.
Note: While ELPH185 appears to be the American market name for this model, there is no evidence it has been sold under this name.
The use of ver.req or vers.req to determine your firmware version does not appear to work. It is recommended you use the ACID utility to determine your firmware version.
Diskboot encoding 17 FI2 encoding d4j
0xc022d1fc Green activity LED on the back 0xc022d200 AF LED
A dump for firmware 100a is available in the CHDK dumps repository
Download location for firmware dumps: