I am searching the Documentation for the Cylcone V example "Remote System Upgrade over UART Based on Nios® II Processor with EPCQ".

I found a reference design for remote system upgrade over UART here:

https://www.intel.com/content/www/us/en/programmable/support/support-resources/design-examples/intellectual-property/embedded/nios-ii/remote-system-upgrade-over-uart-based-on-nios-ii-processor-with-.html

1. Unfortunately there is no documentation (broken link). Can you please provide the documentation?
2. How were the files in cv_e_rsu_uart_project\application_image\application_1 generated?
3. What file types (.sof, .hex) are supported to write directly in the memory?

Thank you very much