Update firmware on cisco servers

Hello, my goal is to update the BMC, BIOS settings, i have an iso file to update it with live os but i want to do it automatically, also i can extract bin and cap files from the iso.
I tried to POST "/redfish/v1/UpdateService/Actions/UpdateService.SimpleUpdate" target with the payload:
{
"ImageURI": "https://path to my file"
"TransferProtocol": "HTTP"
"Targets": ["/redfish/v1/UpdateService/FirmwareInventory/CIMC"]
}

then I get success but when I look at "/redfish/v1/TaskService/Tasks/NUMBER_TASK" it gives me "Download Failed"
I notice that the "MaxImageSizeBytes" property is 60000000 (~60Mb) and mybin file to update the cimc firmware is bigger. also i preffer to use the iso file that contains all the settings update that Needed.

Thank you