OpenELEC 6.0 Beta 2 available

OpenELEC 6.0 Beta 2 Update File

OpenELEC 6.0 Beta 2 NAND Install

OpenELEC 6.0 Beta 2 SD Card Image

Updated core Components (summary) since OpenELEC 5.95.1 (6.0 beta 1)

• update to mesa-10.6.0
• update to kmod-21
• update to kodi-15.0-beta2-daedd5f
• update to freetype-2.6
• update to OpenELEC-settings-0.6.8
• update to libressl-2.1.7
• update to RTL8192DU-7498302, this fixes #4187
• update to bcm2835-bootloader-37600d5
• update to bcm2835-driver-37600d5
• update to wireless-regdb-2015.06.05
• update to fuse-2.9.4
• update to libmicrohttpd-0.9.42
• update to wireless-regdb-2015.05.15
• update to wlan-firmware-0.0.29
• update to misc-firmware-0.0.14
• update to iwlwifi-firmware-0.0.2
• update to linux-4.0.5
• update to xf86-input-libinput-0.11.0
• update to libinput-0.17.0
• update to libpng-1.6.17
• update to xf86-video-intel-7d30cce
• update to libva-1.6.0.pre1
• update to libva-intel-driver-1.6.0.pre1
• update to xorg-server-1.17.1
• update to cmake-3.2.3
• update to u-boot-imx6-e817fa3
• update to arm-mem-4418bb4
• update to llvm-3.6.1
• update to sqlite-autoconf-3081002
• update to dbus-1.8.18
• update to glib-2.44.1
• update to udevil-0.4.4
• update to firmware-imx-3.14.28-1.0.0
• update to imx-vpu-5.4.28
• update to libfslvpuwrap-1.0.58
• update to RTL8188EU-3091828
• update to e2fsprogs-1.42.13
• update to ffmpeg-2.6.3
• update to libXrandr-1.5.0
• update to randrproto-1.5.0
• update to dcadec-37d8e68
• update to libssh-0.7.0
• update to xf86-video-nvidia-346.72
• update to libbdplus-0.1.2
• update to libbluray-0.8.0, enable UDF support
• update to libdrm-2.4.61
• update to libcec-3.0.0
• update to libhdhomerun-20150406
• projects/RPi*/patches/kodi: update RPi support patches
• linux: add and update some AMD and RTL firmwares
• IMX: Update 352Mhz patch for newer kernel remove pr_info message
• kodi: add PR7280
• projects/*/linux: enable CONFIG_HID_SMARTJOYPLUS, this fixes #3973
• Build SPI BCM_2708 and BCM_2835 as modules - in line with Raspbian
• Add CuBox-i remote codes
• projects/WeTek_Play/linux: Disable CONFIG_FB_AMLOGIC_UMP in kernel config
• project imx6: add sgtl5000 analog output alsa config file
• projects/RPi*|imx6/linux: enable CONFIG_W1, this fixes #3975
• libc: install package 'arm-mem' on all RPi variants
• arm-mem: install libarmmem-a7.so on cortex-a7
• projects/WeTek_Play/patches/kodi: add patch to force IEC958 Audio and remove temporary patch to Allow audio passthrough
• libressl: symlink cert.pem
• libressl: fix certificate name

The top one in the list mate.
Updates are universal now, SD & NAND use the same update file.

What version are you currently running though? If you're running 5.0.8 or lower then you need to do a fresh installation

If you're running OpenELEC 6.0 Beta 1 or any of the dev builds released AFTER Beta 1 then yes the Update file will update an SD installation or a NAND installation. It is Universal now.

BUT
If you are currently running OpenELEC 5.0.8 or lower then yes you will need to go for a full reinstall

Absolutely.

Much less room for confusion or mistakes :)