diff --git a/configs/shredos_i686_lite_defconfig b/configs/shredos_i686_lite_defconfig
index 53cd848492..011f96146b 100644
--- a/configs/shredos_i686_lite_defconfig
+++ b/configs/shredos_i686_lite_defconfig
@@ -59,7 +59,7 @@ BR2_PACKAGE_UTIL_LINUX_MOUNT=y
 BR2_PACKAGE_UTIL_LINUX_MOUNTPOINT=y
 BR2_PACKAGE_UTIL_LINUX_PIVOT_ROOT=y
 BR2_PACKAGE_UTIL_LINUX_SETTERM=y
-BR2_TARGET_ROOTFS_CPIO_XZ=y
+BR2_TARGET_ROOTFS_CPIO_LZMA=y
 BR2_TARGET_ROOTFS_INITRAMFS=y
 BR2_TARGET_ROOTFS_ISO9660=y
 BR2_TARGET_ROOTFS_ISO9660_BOTH=y
diff --git a/configs/shredos_iso_extra_i686_defconfig b/configs/shredos_iso_extra_i686_defconfig
index 9df2708ba4..0a6e8bc1ba 100644
--- a/configs/shredos_iso_extra_i686_defconfig
+++ b/configs/shredos_iso_extra_i686_defconfig
@@ -70,6 +70,7 @@ BR2_PACKAGE_UTIL_LINUX_MOUNT=y
 BR2_PACKAGE_UTIL_LINUX_MOUNTPOINT=y
 BR2_PACKAGE_UTIL_LINUX_PIVOT_ROOT=y
 BR2_PACKAGE_UTIL_LINUX_SETTERM=y
+BR2_TARGET_ROOTFS_CPIO_LZMA=y
 BR2_TARGET_ROOTFS_INITRAMFS=y
 BR2_TARGET_ROOTFS_ISO9660=y
 BR2_TARGET_ROOTFS_ISO9660_BOTH=y
@@ -84,7 +85,8 @@ BR2_TARGET_ROOTFS_ISO9660_HYBRID_APPEND_PARTITION="extra.vfat"
 BR2_TARGET_GRUB2=y
 BR2_TARGET_GRUB2_I386_PC=y
 BR2_TARGET_GRUB2_I386_EFI=y
-BR2_TARGET_GRUB2_BUILTIN_MODULES_PC="boot linux ext2 fat squash4 part_msdos part_gpt normal progress biosdisk video video_fb all_video video_cirrus video_bochs net tftp gzio test eval read true gfxterm gfxterm_menu gfxmenu gfxterm_background png usb usb_keyboard search configfile"
+BR2_TARGET_GRUB2_BUILTIN_MODULES_PC="boot linux ext2 fat squash4 part_msdos part_gpt normal progress biosdisk video video_fb all_video video_cirrus video_bochs net tftp gzio test eval read true gfxterm gfxterm_menu gfxmenu gfxterm_background png usb usb_keyboard search configfile iso9660"
+BR2_TARGET_GRUB2_BUILTIN_CONFIG_PC="board/shredos/embed/grub.cfg"
 BR2_TARGET_GRUB2_BUILTIN_MODULES_EFI="boot linux ext2 fat squash4 part_msdos part_gpt normal progress efi_gop efi_uga video video_fb all_video video_cirrus video_bochs net efinet tftp gzio test eval read true gfxterm gfxterm_menu gfxmenu gfxterm_background png usb usb_keyboard search configfile iso9660"
 BR2_TARGET_GRUB2_BUILTIN_CONFIG_EFI="board/shredos/embed/grub.cfg"
 BR2_TARGET_GRUB2_INSTALL_TOOLS=y