https://www.eevblog.com/forum/repair/replace-faulty-dsp-in-a-vsx-922/Из ссылки: EDIT: definitely, when trying to fix UE22 with "firmware upgrade" with broken DSPs the content of SPI flash will be overwritten with corrupt data. I programmed proper firmware into SPI flash (dumped from working AVR), powered up (and as DSPs are broken still not all function) did upgrade and checked what inside, and it was only damaged data, so yeah, one have to replace DSPs first.
