Honored Contributor
Honored Contributorwell my english ist not better ;-)
so okay then we might have the reason. you download a new sof after the hex file and during that time the external sdram device is not refreshed and the sdram clock is not provided during that time. so the external sdram can loose its contend, and does in your case. imagine the refresh is round about every ~7uSec so as you already wrote you must find a way to store your hex file contend after downloading the sof file. as i do not use the ide (well not soooo much) i can't say if there is a possability to download a hex file directly into external memory. but maybe you can include this data into your application an initialised memory content. hopefully somebody else knows how to update external memory locations with the ide. at least you know now why the data is lost. regards.
