Below is the log
Aug 1 08:00:11 syslogd started: BusyBox v1.17.4
Aug 1 08:00:11 kernel: Built 1 zonelists in Zone order, mobility grouping on. Total pages: 60416
Aug 1 08:00:11 kernel: Kernel command line: root=/dev/mtdblock2 console=ttyS0,115200 init=/sbin/preinit earlyprintk debug
Aug 1 08:00:11 kernel: Memory: 255708k/255708k available, 6436k reserved, 0K highmem
Aug 1 08:00:11 kernel: Virtual kernel memory layout:
Aug 1 08:00:11 kernel: vector : 0xffff0000 - 0xffff1000 ( 4 kB)
Aug 1 08:00:11 kernel: fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
Aug 1 08:00:11 kernel: DMA : 0xf7e00000 - 0xffe00000 ( 128 MB)
Aug 1 08:00:11 kernel: vmalloc : 0xd0800000 - 0xf0000000 ( 504 MB)
Aug 1 08:00:11 kernel: lowmem : 0xc0000000 - 0xd0000000 ( 256 MB)
Aug 1 08:00:11 kernel: modules : 0xbf000000 - 0xc0000000 ( 16 MB)
Aug 1 08:00:11 kernel: .init : 0xc0008000 - 0xc0037000 ( 188 kB)
Aug 1 08:00:11 kernel: .text : 0xc0037000 - 0xc0390000 (3428 kB)
Aug 1 08:00:11 kernel: .data : 0xc03a8000 - 0xc03c7ec0 ( 128 kB)
Aug 1 08:00:11 kernel: External imprecise Data abort at addr=0x0, fsr=0x1c06 ignored.
Aug 1 08:00:11 kernel: Mount-cache hash table entries: 512
Aug 1 08:00:11 kernel: Found a AMD NAND flash:
Aug 1 08:00:11 kernel: Total size: 128MB
Aug 1 08:00:11 kernel: Block size: 128KB
Aug 1 08:00:11 kernel: Page Size: 2048B
Aug 1 08:00:11 kernel: OOB Size: 64B
Aug 1 08:00:11 kernel: Sector size: 512B
Aug 1 08:00:11 kernel: Spare size: 16B
Aug 1 08:00:11 kernel: ECC level: 8 (8-bit)
Aug 1 08:00:11 kernel: Device ID: 0x 1 0xf1 0x 0 0x1d 0x 1 0xf1
Aug 1 08:00:11 kernel: bio: create slab <bio-0> at 0
Aug 1 08:00:11 kernel: PCI: no core
Aug 1 08:00:11 kernel: PCI: no core
Aug 1 08:00:12 kernel: PCI: Fixing up bus 0
Aug 1 08:00:12 kernel: PCI: Fixing up bus 0
Aug 1 08:00:12 kernel: PCI: Fixing up bus 1
Aug 1 08:00:12 kernel: VFS: Disk quotas dquot_6.5.2
Aug 1 08:00:12 kernel: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
Aug 1 08:00:12 kernel: pflash: found no supported devices
Aug 1 08:00:12 kernel: bcmsflash: found no supported devices
Aug 1 08:00:12 kernel: Boot partition size = 524288(0x80000)
Aug 1 08:00:12 kernel: lookup_nflash_rootfs_offset: offset = 0x200000
Aug 1 08:00:12 kernel: nflash: squash filesystem with lzma found at block 28
Aug 1 08:00:12 kernel: Creating 4 MTD partitions on "nflash":
Aug 1 08:00:12 kernel: 0x000000000000-0x000000080000 : "boot"
Aug 1 08:00:12 kernel: 0x000000080000-0x000000200000 : "nvram"
Aug 1 08:00:12 kernel: 0x000000200000-0x000004000000 : "linux"
Aug 1 08:00:12 kernel: 0x00000038d358-0x000004000000 : "rootfs"
Aug 1 08:00:12 stop_nat_rules: apply the redirect_rules!
Aug 1 08:00:12 kernel: Registering the dns_resolver key type
Aug 1 08:00:12 kernel: Spare area=64 eccbytes 56, ecc bytes located at:
Aug 1 08:00:12 kernel: 2 3 4 5 6 7 8 9 10 11 12 13 14 15 18 19 20 21 22 23 24 25 26 27 28 29 30 31 34 35 36 37 38 39 40 41 42 43 44 45 46 47 50 51 52 53 54 55 56 57 58 59 60 61 62 63
Aug 1 08:00:12 kernel: Available 7 bytes at (off,len):
Aug 1 08:00:12 kernel: (1,1) (16,2) (32,2) (48,2) (0,0) (0,0) (0,0) (0,0)
Aug 1 08:00:12 kernel: Options: NO_AUTOINCR,NO_READRDY,BBT_SCAN2NDPAGE,
Aug 1 08:00:12 kernel: Creating 2 MTD partitions on "brcmnand":
Aug 1 08:00:12 kernel: 0x000004000000-0x000007ec0000 : "brcmnand"
Aug 1 08:00:12 kernel: 0x000007ec0000-0x000008000000 : "asus"
Aug 1 08:00:12 kernel: VFS: Mounted root (squashfs filesystem) readonly on device 31:3.
Aug 1 08:00:12 WAN(0) Connection: Ethernet link down.
Aug 1 08:00:12 WAN(1) Connection: Ethernet link down.
Aug 1 08:00:12 kernel: ctf: module license 'Proprietary' taints kernel.
Aug 1 08:00:12 kernel: Disabling lock debugging due to kernel taint
Aug 1 08:00:12 kernel: et_module_init: passivemode set to 0x0
Aug 1 08:00:12 kernel: et_module_init: txworkq set to 0x1
Aug 1 08:00:12 kernel: et_module_init: et_txq_thresh set to 0xce4
Aug 1 08:00:12 kernel: eth0: Broadcom BCM47XX 10/100/1000 Mbps Ethernet Controller 6.37.14.105 (r485445)
Aug 1 08:00:12 kernel: wl_module_init: passivemode set to 0x0
Aug 1 08:00:12 kernel: wl_module_init: igs set to 0x0
Aug 1 08:00:12 kernel: wl_module_init: txworkq set to 0x1
Aug 1 08:00:12 kernel: eth1: Broadcom BCM4360 802.11 Wireless Controller 6.37.14.105 (r485445)
Aug 1 08:00:12 kernel: jffs2_scan_inode_node(): CRC failed on node at 0x034547cc: Read 0xffffffff, calculated 0xccb2bc60
Aug 1 08:00:12 kernel: Empty flash at 0x03454c6c ends at 0x03455000
Aug 1 08:00:16 dnsmasq[384]: warning: interface ppp1* does not currently exist
Aug 1 08:00:16 RT-N18U: start httpd
Aug 1 08:00:17 miniupnpd[427]: version 1.9 started
Aug 1 08:00:17 miniupnpd[427]: HTTP listening on port 41503
Aug 1 08:00:17 miniupnpd[427]: Listening for NAT-PMP/PCP traffic on port 5351
Aug 1 08:00:17 disk monitor: be idle
Aug 1 08:00:17 syslog: Generating SSL certificate...
Aug 1 08:00:17 hour monitor: daemon is starting
Aug 1 08:00:17 hour monitor: ntp is not syn
Aug 1 08:00:17 wan: finish adding multi routes
Aug 1 08:00:17 syslog: module ledtrig-usbdev not found in modules.dep
Aug 1 08:00:17 syslog: module leds-usb not found in modules.dep
Aug 1 08:00:18 kernel: SCSI subsystem initialized
Aug 1 08:00:20 kernel: jnl: driver (lke_9.2.0, Dec 6 2015 15:53:07, LBD=ON) loaded at bf5ac000
Aug 1 08:00:21 kernel: ufsd:: trace mask set to 0000000f
Aug 1 08:00:21 kernel: ufsd: driver (lke_9.2.0 lke_9.2.0_r248656_b5, build_host("yau.chang"), acl, ioctl, bdi, sd2(0), wb, bz, tr, rsrc) loaded at bf5b9000
Aug 1 08:00:21 kernel: NTFS support included
Aug 1 08:00:21 kernel: Hfs+/HfsJ support included
Aug 1 08:00:21 kernel: optimized: speed
Aug 1 08:00:21 kernel: Build_for__ASUS_PRODUCTS_003_k2.6.36_2013-11-07_lke_9.2.0_r248656_b5
Aug 1 08:00:21 kernel: xhci_hcd 0000:00:0c.0: Failed to enable MSI-X
Aug 1 08:00:21 kernel: xhci_hcd 0000:00:0c.0: failed to allocate MSI entry
Aug 1 08:00:21 kernel: usb usb1: No SuperSpeed endpoint companion for config 1 interface 0 altsetting 0 ep 129: using minimum values
Aug 1 08:00:28 rc_service: wanduck 372:notify_rc start_wan_if 0
Aug 1 08:00:36 wan: finish adding multi routes
Aug 1 08:00:42 rc_service: wanduck 372:notify_rc restart_wan_if 1
Aug 1 08:00:42 kernel: Attempt to kill tasklet from interrupt
Aug 1 08:00:44 wan: finish adding multi routes
Aug 1 08:00:46 hour monitor: daemon is starting
Aug 1 08:00:46 hour monitor: ntp is not syn
Aug 1 08:01:16 hour monitor: daemon is starting
Aug 1 08:01:16 hour monitor: ntp is not syn
Aug 1 08:01:18 rc_service: wanduck 372:notify_rc restart_wan_if 0
Aug 1 08:01:30 wan: finish adding multi routes
You can try the below beta firmware. The official firmware I will update you again once available.
Some of the USB feature may not be working on this beta firmware.