I was able to flash the RW_LEGACY payload successfully, but when I press Ctrl+L on the developer mode boot screen, it beeps once and says “Something went wrong launching the alternate bootloader”. I can still load edk2 and boot Linux successfully through the “Select alternate bootloader” menu. I’ve attached the firmware log. It seems like Ctrl+L is trying to boot “bootloader #0”, which doesn’t seem to exist?
This is CRAASNETO - Alder Lake-N
Firmware log
Updating storage controller failed. Found SDHCI at 1:0.0 ui_loop_impl: menu item ui_display: screen=0x300, locale=0, selected_item=3, disabled_item_mask=0x0, hidden_item_mask=0x0, timer_disabled=1, current_page=0, error=0x0 ui_menu_navigation_action: Pressed key 0xc, trusted? 1 CBFS: Found 'altfw/list' @0xf24c0 size 0x28 payload_get_altfw_list: Supported alternate bootloaders: 1 edk2 altfw/edk2 edk2 UEFI bootloader developer_boot_altfw_impl: Try booting from bootloader #0 CBFS ERROR: 'payload' not found in 'RW_LEGACY' Could not find 'payload'. payload_run_altfw: Could not find default altfw payload payload_run_altfw: Could not find bootloader #0 developer_boot_altfw_impl: ERROR: Alternate bootloader failed ui_loop_impl: menu item ui_display: screen=0x300, locale=0, selected_item=3, disabled_item_mask=0x0, hidden_item_mask=0x0, timer_disabled=1, current_page=0, error=0xa ui_display: Something went wrong launching the alternate bootloader. View firmware log for details.