Our NanoPC-T3 was flased with s5p6818-eflasher-20180416-friendly-core-arm64. The problem is booting is unstable since it some times boot until the linux prompt and several other freezes at this point, any hints?

Starting udev Coldplug all Devices...
[ 4.684000] mmc_host mmc1: Bus speed (slot 0) = 50000000Hz (slot req 50000000
Hz, actual 50000000HZ div = 0)
[ 4.688000] mmc1: new high speed SDIO card at address 0001
Activating swap /swapfile...
Starting Create Static Device Nodes in /dev...
[ 4.712000] bcmsdh_sdmmc: bcmsdh_sdmmc_probe Enter
[ 4.712000] bcmsdh_sdmmc: bcmsdh_sdmmc_probe Enter
[ 4.716000] bus num (host idx)=1, slot num (rca)=1
[ 4.716000] found adapter info 'DHD generic adapter'
[ 4.720000] F1 signature OK, socitype:0x1 chip:0xa9a6 rev:0x0 pkg:0x4
[ 4.720000] DHD: dongle ram size is set to 524288(orig 524288) at 0x0
Starting Apply Kernel Variables...
Mounting FUSE Control File System...
Mounting Configuration File System...
Starting Flush Journal to Persistent Storage...
[ OK ] Mounted Configuration File System.
[ OK ] Mounted FUSE Control File System.
[ OK ] Started Load/Save Random Seed.
[ OK ] Started Create Static Device Nodes in /dev.
[ OK ] Started Apply Kernel Variables.
Starting udev Kernel Device Manager...
[ OK ] Reached target Local File Systems (Pre).
[ OK ] Reached target Local File Systems.
Starting Set console font and keymap...
Starting Raise network interfaces...
[ OK ] Started Flush Journal to Persistent Storage.