求助，R7000从AC68U刷回原厂

wil***

去年从梅林论坛，参照教程，备份原厂CFE，刷入修改的AC68U的CFE，再刷入了AC68U的梅林系统384版本。现在想返回R7000。
从AC68U的梅林384版本降级成380版本后变砖了。从网上买了TTL-USB线，然后tftp刷入各种固件，还是不行。大神帮我看看我现在到哪一步了？麻烦指导一下！
CFE for Foxconn Router R7000 version: v1.0.22
Build Date: Wed Mar 19 11:14:20 CST 2014
Init Arena
Init Devs.
Boot up from NAND flash...
Bootcode Boot partition size = 524288(0x80000)
DDR Clock: 800 MHz
Info: DDR frequency set from clkfreq=1000,*800*
et0: Broadcom BCM47XX 10/100/1000 Mbps Ethernet Controller 6.37.15.1 (r407936)
et1: Broadcom BCM47XX 10/100/1000 Mbps Ethernet Controller 6.37.15.1 (r407936)
CPU type 0x0: 1000MHz
Tot mem: 262144 KBytes

Device eth0:  hwaddr 00-46-BC-8D-5E-71, ipaddr 192.168.1.1, mask 255.255.255.0
        gateway not set, nameserver not set
Loader:raw Filesys:tftp Dev:eth0 File:192.168.1.2:vmlinuz Optionsnull)
Loading: Failed.
Could not load 192.168.1.2:vmlinuz: Timeout occured
Checking crc...Loader:raw Filesys:raw Dev:nflash0.os File: Optionsnull)
Loading: ... 1632624 bytes read
Entry at 0x00008000
Closing network.
Starting program at 0x00008000
Uncompressing Linux... done, booting the kernel.
** 25 printk messages dropped ** Virtual kernel memory layout:
    vector  : 0xffff0000 - 0xffff1000   (   4 kB)
    fixmap  : 0xffc00000 - 0xfff00000   (3072 kB)
    vmalloc : 0x88800000 - 0xff800000   (1904 MB)
    lowmem  : 0x80000000 - 0x88000000   ( 128 MB)
    pkmap   : 0x7fe00000 - 0x80000000   (   2 MB)
    modules : 0x7f000000 - 0x7fe00000   (  14 MB)
      .text : 0x80008000 - 0x8048be3c   (4624 kB)
      .init : 0x8048c000 - 0x804e2000   ( 344 kB)
      .data : 0x804e2000 - 0x80512f30   ( 196 kB)
       .bss : 0x80515000 - 0x8058a1e4   ( 469 kB)
Hierarchical RCU implementation.
        CONFIG_RCU_FANOUT set to non-default value of 2
        Build-time adjustment of leaf fanout to 2.
NR_IRQS:256
MPCORE GIC init
soc_dmu_init
add clk lookups
MPCORE Global Timer Clock 500000000Hz on IRQ 27
sched_clock: 32 bits at 500MHz, resolution 2ns, wraps every 4294967295ns
clocksource: mpcore_gtimer: mask: 0xffffffffffffffff max_cycles: 0xe6a171a037, max_idle_ns: 881590485102 ns
register local timer
smp_twd: clock not found -2
Calibrating local timer... 499.73MHz.
Calibrating delay loop... 1987.37 BogoMIPS (lpj=9936896)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
CPU: Testing write buffer coherency: ok
CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
2 cores has been found
Setting up static identity map for 0x85e0 - 0x8614
L2C: platform provided aux values permit register corruption.
L2C: DT/platform modifies aux control register: 0x0a130000 -> 0x7a530000
L2C-310 erratum 769419 enabled
L2C-310 enabling early BRESP for Cortex-A9
L2C-310 full line of zeros enabled for Cortex-A9
L2C-310 dynamic clock gating enabled, standby mode enabled
L2C-310 cache controller enabled, 16 ways, 256 kB
L2C-310: CACHE_ID 0x410000c8, AUX_CTRL 0x4e530001
CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
Brought up 2 CPUs
SMP: Total of 2 processors activated (3981.31 BogoMIPS).
clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
NET: Registered protocol family 16
DMA: preallocated 256 KiB pool for atomic coherent allocations
coherence_win_size = 10000000
coherence_flag = FFFFFFF8
ddr_phys_offset_va =FFFFFFFF
ddr_phys_offset2_va =A8000000
Found a Mxic NAND flash:
Total size:  128MB
Block size:  128KB
Page Size:   2048B
OOB Size:    64B
Sector size: 512B
Spare size:  16B
ECC level:   8 (8-bit)
Device ID: 0xc2 0xf1 0x80 0x1d 0xc2 0xf1
found nand nvram at 80000
CCA UART Clock Config: Sel=1 Ovr=1 Div=48
CCA UART Clock rate 125000000Hz CCB UART Clock rate 125000000Hz
clocksource: Switched to clocksource mpcore_gtimer
NET: Registered protocol family 2
TCP established hash table entries: 1024 (order: 0, 4096 bytes)
TCP bind hash table entries: 1024 (order: 1, 8192 bytes)
TCP: Hash tables configured (established 1024 bind 1024)
UDP hash table entries: 256 (order: 1, 8192 bytes)
UDP-Lite hash table entries: 256 (order: 1, 8192 bytes)
NET: Registered protocol family 1
init gpio code
PCI: no core
PCI: no core
PCI: scanning bus 0
PCI host bridge to bus 0000:00
pci_bus 0000:00: root bus resource [io  0x0000-0xffffffff]
pci_bus 0000:00: root bus resource [mem 0x00000000-0xffffffff]
pci_bus 0000:00: root bus resource [bus 00-ff]
pci 0000:00:11.0: [Firmware Bug]: reg 0x10: invalid BAR (can't size)
PCI: Fixing up bus 0 domain 0
PCIE1 link=1
PCIE1 switching to GEN2
PCIE1 link=1
PCI host bridge to bus 0001:00
pci_bus 0001:00: root bus resource [mem 0x08000000-0x0fffffff]
pci_bus 0001:00: No busn resource found for root bus, will use [bus 00-ff]
PCI: Fixing up bus 0 domain 1
PCI: bus0: Fast back to back transfers disabled
pci 0001:01:00.0: Max Payload Size set to 512 (was 128, max 512)
PCI: Fixing up bus 1 domain 1
PCI: bus1: Fast back to back transfers disabled
pci 0001:00:00.0: BAR 8: assigned [mem 0x08000000-0x080fffff]
pci 0001:01:00.0: BAR 0: assigned [mem 0x08000000-0x08007fff 64bit]
pci 0001:00:00.0: PCI bridge to [bus 01]
pci 0001:00:00.0:   bridge window [mem 0x08000000-0x080fffff]
PCIE2 link=1
PCIE2 switching to GEN2
PCIE2 link=1
PCI host bridge to bus 0002:00
pci_bus 0002:00: root bus resource [mem 0x40000000-0x47ffffff]
pci_bus 0002:00: No busn resource found for root bus, will use [bus 00-ff]
PCI: Fixing up bus 0 domain 2
PCI: bus0: Fast back to back transfers disabled
pci 0002:01:00.0: Max Payload Size set to 512 (was 128, max 512)
PCI: Fixing up bus 1 domain 2
PCI: bus1: Fast back to back transfers disabled
pci 0002:00:00.0: BAR 8: assigned [mem 0x40000000-0x400fffff]
pci 0002:01:00.0: BAR 0: assigned [mem 0x40000000-0x40007fff 64bit]
pci 0002:00:00.0: PCI bridge to [bus 01]
pci 0002:00:00.0:   bridge window [mem 0x40000000-0x400fffff]
PCIE3 link=0
futex hash table entries: 512 (order: 3, 32768 bytes)
squashfs: version 3.0 (2006/03/15) Phillip Lougher
io scheduler noop registered (default)
io scheduler cfq registered
serial8250_init
Serial: 8250/16550 driver, 3 ports, IRQ sharing disabled
console [ttyS0] disabled
serial8250.0: ttyS0 at MMIO 0x18000300 (irq = 117, base_baud = 7812500) is a 16550
console [ttyS0] enabled
serial8250.0: ttyS1 at MMIO 0x18000400 (irq = 117, base_baud = 7812500) is a 16550
brd: module loaded
loop: module loaded
bcmsflash: found no supported devices
Boot partition size = 524288(0x80000)
lookup_nflash_rootfs_offset: offset = 0x200000 size = 0x1e00000, 0x20000
found TRX Header on nflash!
nflash: squash filesystem with lzma found at block 29
Creating 4 MTD partitions on "nflash":
0x000000000000-0x000000080000 : "boot"
0x000000080000-0x000000200000 : "nvram"
0x000000200000-0x000002000000 : "linux"
0x0000003a0000-0x000002000000 : "rootfs"
tun: Universal TUN/TAP device driver, 1.6
tun: (C) 1999-2004 Max Krasnyansky <maxk@qualcomm.com>
PPP generic driver version 2.4.2
PPP BSD Compression module registered
PPP Deflate Compression module registered
PPP MPPE Compression module registered
NET: Registered protocol family 24
GACT probability NOT on
Mirror/redirect action on
Simple TC action Loaded
netem: version 1.3
u32 classifier
    Performance counters on
    input device check on
    Actions configured
Netfilter messages via NETLINK v0.30.
nf_conntrack version 0.5.0 (3971 buckets, 15884 max)
nf_conntrack_rtsp v0.7 loading
xt_time: kernel timezone is -0000
ip_set: protocol 6
gre: GRE over IPv4 demultiplexor driver
nf_nat_rtsp v0.7 loading
ip_tables: (C) 2000-2006 Netfilter Core Team
NET: Registered protocol family 17
bridge: automatic filtering via arp/ip/ip6tables has been deprecated. Update your scripts to load br_netfilter if you need this.
Bridge firewalling registered
8021q: 802.1Q VLAN Support v1.8
Registering SWP/SWPB emulation handler
max nvram space = 131072
read 65536 bytes to offset 0
Key type encrypted registered
Northstar brcmnand NAND Flash Controller driver, Version 0.1 (c) Broadcom Inc. 2012
nand: device found, Manufacturer ID: 0xc2, Chip ID: 0xf1
nand: Macronix NAND 128MiB 3,3V 8-bit
nand: 128 MiB, SLC, erase size: 128 KiB, page size: 2048, OOB size: 64
Spare area=64 eccbytes 56, ecc bytes located at:
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
Available 7 bytes at (off,len):
(1,1) (16,2) (32,2) (48,2) (0,0) (0,0) (0,0) (0,0) (0,0) (0,0) (0,0) (0,0) (0,0) (0,0) (0,0) (0,0) (0,0) (0,0) (0,0) (0,0) (0,0) (0,0) (0,0) (0,0) (0,0) (0,0) (0,0) (0,0) (0,0) (0,0) (0,0) (0,0)
Scanning device for bad blocks
Options: NO_SUBPAGE_WRITE,
Creating 1 MTD partitions on "brcmnand":
0x000002000000-0x000008000000 : "ddwrt"
VFS: Mounted root (squashfs filesystem) readonly on device 31:3.
Freeing unused kernel memory: 344K (8048c000 - 804e2000)
start service
starting Architecture code for northstar
udevtrigger[364]: parse_config_file: can't open '/etc/udev/udev.conf' as config file: No such file or directory
1970-01-01 00:00:05 main: Sanity checks succeeded
length = 0
try modules for ethernet adapters
et: module license 'Proprietary' taints kernel.
Disabling lock debugging due to kernel taint
et_module_init: passivemode set to 0x0
et_module_init: txworkq set to 0x1
et_module_init: et_txq_thresh set to 0xce4
et_module_init: et_rxlazy_timeout set to 0x3e8
et_module_init: et_rxlazy_framecnt set to 0x20
et_module_init: et_rxlazy_dyn_thresh set to 0
eth0: Broadcom BCM47XX 10/100/1000 Mbps Ethernet Controller 7.14.89.21 (r524987)
wl_module_init: passivemode set to 0x0
wl_module_init: txworkq set to 0x1
Unable to handle kernel NULL pointer dereference at virtual address 00000000
pgd = 87328000
[00000000] *pgd=071ee831, *pte=00000000, *ppte=00000000
Internal error: Oops - BUG: 17 [#1] SMP ARM
Modules linked in: wl(P+) igs(P) emf(P) switch_robo switch_core et(P)
CPU: 1 PID: 603 Comm: insmod Tainted: P                4.4.39-rc1 #1615
Hardware name: Northstar Prototype
task: 87894800 ti: 8720c000 task.ti: 8720c000
PC is at memcpy+0x48/0x330
LR is at _3241+0x265c/0x27d0 [wl]
pc : [<80011da8>]    lr : [<7f09acb8>]    psr: 80000013
sp : 8720d9fc  ip : 00000000  fp : 8720daa4
r10: 872ba000  r9 : 872d4000  r8 : 000011f0
r7 : 872ba018  r6 : 0000000c  r5 : 000011ec  r4 : 00000000
r3 : 00000003  r2 : ffffffa0  r1 : 00000000  r0 : 871479c0
Flags: Nzcv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment user
Control: 10c5387d  Table: 0732804a  DAC: 00000055
Process insmod (pid: 603, stack limit = 0x8720c190)
Stack: (0x8720d9fc to 0x8720e000)
d9e0:                                                                000011ec
da00: 0000000c 872ba018 000011f0 871479c0 00000000 7f09acb8 ffffc000 872ba000
da20: 872ba000 0002c108 801f7a7c 00000000 00000000 00000000 00000020 00000020
da40: 00000020 00000000 00000020 00000040 00000100 00000040 00000040 fffffffe
da60: 00000000 00000000 00000100 00000200 7f1900b0 8007cd58 872d4000 872d4000
da80: 00000002 000006b8 872d455d 7f27b66c 7f27b654 00000000 8720daf4 8720daa8
daa0: 7f0b5e1c 7f098668 0000011c 00000001 00000000 0000cb01 8720dadc 0004dac8
dac0: 80212069 800c6294 8711f000 8711f000 871ba400 00000000 00000000 89da0000
dae0: 00000000 8799f000 8720dbcc 8720daf8 7f1e3af8 7f0b4944 ffffffff 00000001
db00: 00000000 89da0000 00000001 8737ef40 89da0000 89da0000 15134360 8737ef40
db20: 0006cbff 58680001 005f07ff 00000000 00000000 00000000 00000014 8737ef40
db40: 00000000 b0518c05 8720db6c 8720db58 802121c4 800c6294 8737ef40 871ffe00
db60: 87147bc0 00000000 0000002a 00000001 00000001 00000000 436014e4 00004360
db80: 00000003 00000001 0000000b 00000665 00001301 000014e4 00000110 00000000
dba0: 8799f000 8799f000 00000000 00004360 8711fe00 00000000 8711fc00 8737ef40
dbc0: 8720dc44 8720dbd0 7f1ac0d0 7f1e3128 00000000 8737ef40 89da0000 00000001
dbe0: 87966400 8720dbf0 80020168 80160300 8799f30d 000014e4 8711fe00 00000000
dc00: 00000000 00000000 00000000 8720dc18 80020224 8002003c 7f18f380 8711fe00
dc20: 87966400 7f422a80 8713e800 00000000 00000000 8737ef40 8720dcbc 8720dc48
dc40: 7f18f3fc 7f1abe84 00000000 8737ef40 89da0000 00000001 87966400 00000000
dc60: 8720dc88 865637b8 86563718 000000a3 000014e4 00004360 08000000 87b0a800
dc80: 8720dcb4 00000000 00000000 8011a4fc 87966468 87966468 87966400 7f421cec
dca0: 00000000 7f421d20 00000002 024000c0 8720dce4 8720dcc0 8018c554 7f18f0a0
dcc0: 8058272c 87966468 80582720 00000000 7f421d20 00000002 8720dd0c 8720dce8
dce0: 801b68d0 8018c4e8 87966468 7f421d20 8796649c 00000000 00000000 7f4221c0
dd00: 8720dd2c 8720dd10 801b6ae0 801b67f0 00000000 7f421d20 801b6a64 00000000
dd20: 8720dd54 8720dd30 801b4dbc 801b6a70 878a9d5c 879476b4 8720dd64 7f421d20
dd40: 87a72700 805033c8 8720dd64 8720dd58 801b6360 801b4d74 8720dd8c 8720dd68
dd60: 801b5f28 801b6348 7f38d770 8720dd78 7f421d20 804f9918 87b4b7c0 7f437000
dd80: 8720dda4 8720dd90 801b710c 801b5e58 7f422a80 804f9918 8720ddb4 8720dda8
dda0: 8018bdc8 801b7078 8720ddcc 8720ddb8 7f4370cc 8018bd8c 804f9918 804f9918
ddc0: 8720de44 8720ddd0 8001809c 7f43700c 8720df3c 7f4221c0 00000002 87b4b7c0
dde0: 00000001 0000001d 8720df3c 7f4221c0 8720de1c 8720de00 800bdad8 800c561c
de00: 0000047f 8730c3c0 00000001 0000001d 0000047f 8730c3c0 00000001 0000001d
de20: 7f4221c0 879e6a10 00000000 8730c3c0 8720df3c 7f4221c0 8720de6c 8720de48
de40: 8009125c 80017f94 8720de6c 8720de58 879e6800 879e6a10 00000000 0000001d
de60: 8720df34 8720de70 80092bc0 80091200 7f4221cc 00007fff 7f4221c0 80090bfc
de80: 8042b238 8042b210 8042b204 8042b268 8042b494 7f4221cc 89d9595c 7f422318
dea0: 8720decc 7f4221c0 804ff168 8042b48c 8009012c 7f422208 80009e80 80009328
dec0: 89ca5380 76d983a8 00001c00 00000000 00000000 00000000 00000000 00000000
dee0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
df00: 00000000 00000000 024002c2 0000e9ac 00000000 76e889bc 89d959ac 8720c000
df20: 00096fc0 00000000 8720dfa4 8720df38 800932f8 80091440 87894800 89917000
df40: 0047e9ac 89d95524 89d9542c 89d26c44 003f9b7c 0040771c 00000000 00000000
df60: 00000000 0001e5b0 0000001b 0000001c 00000015 00000000 00000010 00000000
df80: 00000000 00096f00 00000000 00000080 800096e4 8720c000 00000000 8720dfa8
dfa0: 80009540 800931e0 00000000 00096f00 76a0a010 0047e9ac 00096fc0 00096f10
dfc0: 00000000 00096f00 00000000 00000080 7eb28ec4 0007c52a 0007af20 00096f00
dfe0: 7eb28c24 7eb28c08 0001e2f8 76edbd3c 20000010 76a0a010 07ffa811 07ffac11
Backtrace:
[<7f09865c>] (_3241 [wl]) from [<7f0b5e1c>] (_3239+0x14e4/0x1870 [wl])
r10:00000000 r9:7f27b654 r8:7f27b66c r7:872d455d r6:000006b8 r5:00000002
r4:872d4000
[<7f0b4938>] (_3239 [wl]) from [<7f1e3af8>] (_2210+0x9dc/0x1850 [wl])
r10:8799f000 r9:00000000 r8:89da0000 r7:00000000 r6:00000000 r5:871ba400
r4:8711f000
[<7f1e311c>] (_2210 [wl]) from [<7f1ac0d0>] (_2166+0x258/0x1e88 [wl])
r10:8737ef40 r9:8711fc00 r8:00000000 r7:8711fe00 r6:00004360 r5:00000000
r4:8799f000
[<7f1abe78>] (_2166 [wl]) from [<7f18f3fc>] (_1755+0x368/0x5b0 [wl])
r10:8737ef40 r9:00000000 r8:00000000 r7:8713e800 r6:7f422a80 r5:87966400
r4:8711fe00
[<7f18f094>] (_1755 [wl]) from [<8018c554>] (pci_device_probe+0x78/0xd0)
r10:024000c0 r9:00000002 r8:7f421d20 r7:00000000 r6:7f421cec r5:87966400
r4:87966468
[<8018c4dc>] (pci_device_probe) from [<801b68d0>] (really_probe+0xec/0x280)
r9:00000002 r8:7f421d20 r7:00000000 r6:80582720 r5:87966468 r4:8058272c
[<801b67e4>] (really_probe) from [<801b6ae0>] (__driver_attach+0x7c/0xa0)
r9:7f4221c0 r8:00000000 r7:00000000 r6:8796649c r5:7f421d20 r4:87966468
[<801b6a64>] (__driver_attach) from [<801b4dbc>] (bus_for_each_dev+0x54/0xa8)
r7:00000000 r6:801b6a64 r5:7f421d20 r4:00000000
[<801b4d68>] (bus_for_each_dev) from [<801b6360>] (driver_attach+0x24/0x28)
r6:805033c8 r5:87a72700 r4:7f421d20
[<801b633c>] (driver_attach) from [<801b5f28>] (bus_add_driver+0xdc/0x218)
[<801b5e4c>] (bus_add_driver) from [<801b710c>] (driver_register+0xa0/0xdc)
r7:7f437000 r6:87b4b7c0 r5:804f9918 r4:7f421d20
[<801b706c>] (driver_register) from [<8018bdc8>] (__pci_register_driver+0x48/0x4c)
r5:804f9918 r4:7f422a80
[<8018bd80>] (__pci_register_driver) from [<7f4370cc>] (_1156+0xcc/0xd8 [wl])
[<7f437000>] (_1156 [wl]) from [<8001809c>] (do_one_initcall+0x114/0x1a4)
r5:804f9918 r4:804f9918
[<80017f88>] (do_one_initcall) from [<8009125c>] (do_init_module+0x68/0x1c0)
r9:7f4221c0 r8:8720df3c r7:8730c3c0 r6:00000000 r5:879e6a10 r4:7f4221c0
[<800911f4>] (do_init_module) from [<80092bc0>] (load_module+0x178c/0x1da0)
r7:0000001d r6:00000000 r5:879e6a10 r4:879e6800
[<80091434>] (load_module) from [<800932f8>] (SyS_init_module+0x124/0x158)
r10:00000000 r9:00096fc0 r8:8720c000 r7:89d959ac r6:76e889bc r5:00000000
r4:0000e9ac
[<800931d4>] (SyS_init_module) from [<80009540>] (ret_fast_syscall+0x0/0x34)
r9:8720c000 r8:800096e4 r7:00000080 r6:00000000 r5:00096f00 r4:00000000
Code: ba000002 f5d1f03c f5d1f05c f5d1f07c (e8b151f8)
---[ end trace ffc951a337d5e24c ]---
Kernel panic - not syncing: Fatal exception
CPU0: stopping
CPU: 0 PID: 0 Comm: swapper/0 Tainted: P      D         4.4.39-rc1 #1615
Hardware name: Northstar Prototype
Backtrace:
[<8001b0d8>] (dump_backtrace) from [<8001b2ac>] (show_stack+0x18/0x1c)
r7:804e3f20 r6:60000193 r5:00000000 r4:80502edc
[<8001b294>] (show_stack) from [<8015eaf0>] (dump_stack+0x8c/0xa0)
[<8015ea64>] (dump_stack) from [<8001ce8c>] (handle_IPI+0x110/0x1a8)
r7:804e3f20 r6:00000000 r5:00000000 r4:805151a0
[<8001cd7c>] (handle_IPI) from [<80009394>] (gic_handle_irq+0x78/0x7c)
r7:b0100100 r6:804e3f20 r5:b010010c r4:804f1b14
[<8000931c>] (gic_handle_irq) from [<80009e80>] (__irq_svc+0x40/0x54)
Exception stack(0x804e3f20 to 0x804e3f68)
3f20: 86dd4240 00000000 00008dfa 8000a960 804e2000 804f18e0 80426380 804dd220
3f40: 804e3f90 804b58c8 00000000 804e3f7c 804e3f80 804e3f70 80018d38 80018d3c
3f60: 60000013 ffffffff
r9:804b58c8 r8:804e3f90 r7:804e3f54 r6:ffffffff r5:60000013 r4:80018d3c
[<80018d00>] (arch_cpu_idle) from [<8006a228>] (default_idle_call+0x30/0x34)
[<8006a1f8>] (default_idle_call) from [<8006a334>] (cpu_startup_entry+0x108/0x13c)
[<8006a22c>] (cpu_startup_entry) from [<80012a48>] (rest_init+0x80/0x84)
r7:80515020 r4:00000000
[<800129c8>] (rest_init) from [<8048ccc0>] (start_kernel+0x320/0x32c)
[<8048c9a0>] (start_kernel) from [<0000807c>] (0x807c)
Rebooting in 10 seconds..Digital core power voltage set to 1.0V

玉***

刷原厂固件之前没有恢复cfe吗？ 如果还是1.3.0.7cfe的话试试启动进入cfe再刷

knee***

从AC68U的梅林384版本降级成380版本 cfe刷回去没有

玉***

建议用SFTP把384版本刷回去，看看成功不，如果成功了先刷回原厂的CFE（你备份的CFE），再刷回原厂固件。
如果CFE没有刷回原厂的，应该用SFTP只能刷梅林固件，刷其它固件不行的。

按住Reset键，再开电源，看看能不能进入恢复模式，能进去就好办了，网上好多办法