DJI Phantom 2 Vision+ Vision Plus Blank or Black Screen Repair and Fix

Section 3: Check that you're good to go

Disconnect the wifi board from the TTL adapter, disconnect the TTL from the USB port, exit command prompt
Un-jumper BOOT from 3v3 on the wifi board (disconnect the two pads)
Connect the TTL adapter to the USB port
Open Tera Term, connect to the appropriate COM port: Setup > Serial Port > COMXX, Flow control:none, Speed 115200
Plug the TTL adapter to the wifi board
You should see results like this:

DM36x initialization passed!

UBL Product Vesion : DJI-UBL-1.0-rc2

Dji UBL Version: 1.51(Jun 19 2014 - 01:14:42)

Booting Catalog Boot Loader

BootMode = NAND

Starting NAND Copy...

Valid magicnum, 0xA1ACED66, found in block 0x00000019.

   DONE

Jumping to entry point at 0x81080000.

U-Boot Product Vesion : DJI-Uboot-1.0-rc2

U-Boot 2010.12-rc2-svn539-Dji (Feb 13 2014 - 04:32:46)

Cores: ARM 297 MHz

DDR:   270 MHz

I2C:   ready

DRAM:  128 MiB

NAND:  128 MiB

Bad block table found at page 65472, version 0x01

Bad block table found at page 65408, version 0x01

*** Warning - bad CRC, using default environment

Net:   Ethernet PHY: GENERIC @ 0xff

DaVinci-EMAC

Hit any key to stop autoboot:  1     0

Loading from nand0, offset 0x4a0000

   Image Name:   Linux-2.6.32.17-davinci1

   Created:      2014-04-09  12:21:58 UTC

   Image Type:   ARM Linux Kernel Image (uncompressed)

   Data Size:    3823424 Bytes = 3.6 MiB

   Load Address: 80008000

   Entry Point:  80008000

## Booting kernel from Legacy Image at 80700000 ...

   Image Name:   Linux-2.6.32.17-davinci1

   Created:      2014-04-09  12:21:58 UTC

   Image Type:   ARM Linux Kernel Image (uncompressed)

   Data Size:    3823424 Bytes = 3.6 MiB

   Load Address: 80008000

   Entry Point:  80008000

   Loading Kernel Image ... OK

OK

Starting kernel ...

[    0.000000] Kernel Product Vesion : DJI-Kernel-1.0-rc2

[    0.000000] Linux version 2.6.32.17-davinci1 (root@ubuntu) (gcc version 4.3.3 (Sourcery G++ Lite 2009q1-203) ) #6 PREEMPT Wed Apr 9 05:21:55 PDT 2014

[    0.000000] CPU: ARM926EJ-S [41069265] revision 5 (ARMv5TEJ), cr=00053177

[    0.000000] CPU: VIVT data cache, VIVT instruction cache

[    0.000000] Machine: DaVinci DM36x EVM

[    0.000000] Memory policy: ECC disabled, Data cache writeback

[    0.000000] DaVinci dm36x_rev1.2 variant 0x8

[    0.000000] Built 1 zonelists in Zone order, mobility grouping off.  Total pages: 12192

[    0.000000] Kernel command line: console=ttyS0,115200n8 rw dm365_imp.oper_mode=0 video=davincifb:vid0=0,0:vid1=0,0:osd0=0,0:osd1=0,0 mem=48MB davinci_enc_mngr.ch0_output=COMPOSITE davinci_enc_mngr.ch0_mode=pal ubi.mtd=2,2048 root=ubi0:rootfs rootfstype=ubifs ip=off lpj=1077248

[    0.000000] PID hash table entries: 256 (order: -2, 1024 bytes)

[    0.000000] Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)

[    0.000000] Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)

[    0.000000] Memory: 48MB = 48MB total

[    0.000000] Memory: 44784KB available (3456K code, 310K data, 112K init, 0K highmem)

[    0.000000] SLUB: Genslabs=11, HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1

[    0.000000] Hierarchical RCU implementation.

[    0.000000] NR_IRQS:245

[    0.000000] Console: colour dummy device 80x30

[    0.000000] Calibrating delay loop (skipped) preset value.. 215.44 BogoMIPS (lpj=1077248)

[    0.000000] Mount-cache hash table entries: 512

[    0.000000] CPU: Testing write buffer coherency: ok

[    0.000000] DaVinci: 8 gpio irqs

[    0.000000] NET: Registered protocol family 16

[    0.090000] EVM: tvp5146 SD video input

[    0.160000] bio: create slab <bio-0> at 0

[    0.170000] DM365 IPIPE initialized in Continuous mode

[    0.170000] usbcore: registered new interface driver usbfs

[    0.170000] usbcore: registered new interface driver hub

[    0.170000] usbcore: registered new device driver usb

[    0.180000] vpss vpss: dm365_vpss vpss probed

[    0.180000] vpss vpss: dm365_vpss vpss probe success

[    0.180000] dm365_afew_hw_init

[    0.180000] ch0 default output "COMPOSITE", mode "PAL"

[    0.180000] VPBE Encoder Initialized

[    0.190000] cfg80211: Using static regulatory domain info

[    0.190000] cfg80211: Regulatory domain: US

[    0.190000]   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)

[    0.190000]  (2402000 KHz - 2472000 KHz @ 40000 KHz), (600 mBi, 2700 mBm)

[    0.190000]  (5170000 KHz - 5190000 KHz @ 40000 KHz), (600 mBi, 2300 mBm)

[    0.190000]  (5190000 KHz - 5210000 KHz @ 40000 KHz), (600 mBi, 2300 mBm)

[    0.190000]  (5210000 KHz - 5230000 KHz @ 40000 KHz), (600 mBi, 2300 mBm)

[    0.190000]  (5230000 KHz - 5330000 KHz @ 40000 KHz), (600 mBi, 2300 mBm)

[    0.190000]  (5735000 KHz - 5835000 KHz @ 40000 KHz), (600 mBi, 3000 mBm)

[    0.190000] cfg80211: Calling CRDA for country: US

[    0.190000] LogicPD encoder initialized

[    0.190000] Switching to clocksource timer0_1

[    0.200000] musb_hdrc: version 6.0, cppi-dma, host, debug=0

[    0.220000] musb_hdrc: USB Host mode controller at fec64000 using DMA, IRQ 12

[    0.220000] musb_hdrc musb_hdrc: MUSB HDRC host driver

[    0.220000] musb_hdrc musb_hdrc: new USB bus registered, assigned bus number 1

[    0.220000] usb usb1: configuration #1 chosen from 1 choice

[    0.220000] hub 1-0:1.0: USB hub found

[    0.220000] hub 1-0:1.0: 1 port detected

[    0.220000] NET: Registered protocol family 2

[    0.220000] IP route cache hash table entries: 1024 (order: 0, 4096 bytes)

[    0.220000] TCP established hash table entries: 2048 (order: 2, 16384 bytes)

[    0.220000] TCP bind hash table entries: 2048 (order: 1, 8192 bytes)

[    0.220000] TCP: Hash tables configured (established 2048 bind 2048)

[    0.220000] TCP reno registered

[    0.220000] NET: Registered protocol family 1

[    0.220000] RPC: Registered udp transport module.

[    0.220000] RPC: Registered tcp transport module.

[    0.220000] RPC: Registered tcp NFSv4.1 backchannel transport module.

[    0.230000] JFFS2 version 2.2. (NAND) ?? 2001-2006 Red Hat, Inc.

[    0.230000] msgmni has been set to 87

[    0.240000] alg: No test for stdrng (krng)

[    0.240000] io scheduler noop registered (default)

[    0.320000] DM365 IPIPEIF probed

[    0.320000] imp serializer initialized

[    0.320000] davinci_previewer initialized

[    0.330000] davinci_resizer initialized

[    0.330000] Serial: 8250/16550 driver, 2 ports, IRQ sharing disabled

[    0.330000] serial8250.0: ttyS0 at MMIO 0x1c20000 (irq = 40) is a 16550A

[    0.740000] console [ttyS0] enabled

[    0.750000] serial8250.0: ttyS1 at MMIO 0x1d06000 (irq = 41) is a 16550A

[    0.760000] brd: module loaded

[    0.770000] NAND device: Manufacturer ID: 0x2c, Chip ID: 0xf1 (Micron NAND 128MiB 3,3V 8-bit)

[    0.780000] Creating 4 MTD partitions on "davinci_nand.0":

[    0.780000] 0x000000000000-0x0000004a0000 : "bootloader"

[    0.790000] 0x0000004a0000-0x000000e00000 : "kernel"

[    0.800000] 0x000000e00000-0x000007f00000 : "filesystem"

[    0.810000] 0x000000000000-0x000008000000 : "all"

[    0.820000] davinci_nand davinci_nand.0: controller rev. 2.3

[    0.830000] UBI: attaching mtd2 to ubi0

[    0.830000] UBI: physical eraseblock size:   131072 bytes (128 KiB)

[    0.840000] UBI: logical eraseblock size:    126976 bytes

[    0.850000] UBI: smallest flash I/O unit:    2048

[    0.850000] UBI: sub-page size:              512

[    0.850000] UBI: VID header offset:          2048 (aligned 2048)

[    0.860000] UBI: data offset:                4096

[    1.390000] UBI: attached mtd2 to ubi0

[    1.400000] UBI: MTD device name:            "filesystem"

[    1.400000] UBI: MTD device size:            113 MiB

[    1.410000] UBI: number of good PEBs:        904

[    1.410000] UBI: number of bad PEBs:         0

[    1.420000] UBI: max. allowed volumes:       128

[    1.420000] UBI: wear-leveling threshold:    4096

[    1.430000] UBI: number of internal volumes: 1

[    1.430000] UBI: number of user volumes:     1

[    1.440000] UBI: available PEBs:             0

[    1.440000] UBI: total number of reserved PEBs: 904

[    1.450000] UBI: number of PEBs reserved for bad PEB handling: 9

[    1.450000] UBI: max/mean erase counter: 2/1

[    1.460000] UBI: image sequence number: 465088957

[    1.460000] UBI: background thread "ubi_bgt0d" started, PID 308

[    1.470000] console [netcon0] enabled

[    1.470000] netconsole: network logging started

[    1.480000] i2c /dev entries driver

[    1.480000] Linux video capture interface: v2.00

[    1.490000] vpfe_init

[    1.490000] vpfe-capture: vpss clock vpss_master enabled

[    1.500000] vpfe-capture vpfe-capture: v4l2 device registered

[    1.510000] vpfe-capture vpfe-capture: video device registered

[    1.550000] EVM: switch to tvp5151 cvbs video input

[    1.550000] vpfe-capture vpfe-capture: v4l2 sub device tvp5150 registered

[    1.560000] EVM: switch to it6604 hdmi video input

[    1.570000] vpfe-capture vpfe-capture: v4l2 sub device cat6023 register fails

[    1.570000] vpfe_register_ccdc_device: DM365 ISIF

[    1.580000] DM365 ISIF is registered with vpfe.

[    1.590000] Trying to register davinci display video device.

[    1.590000] layer=c1067800,layer->video_dev=c1067964

[    1.600000] Trying to register davinci display video device.

[    1.600000] layer=c1067c00,layer->video_dev=c1067d64

[    1.610000] davinci_init:DaVinci V4L2 Display Driver V1.0 loaded

[    1.620000] watchdog watchdog: heartbeat 1 sec

[    1.620000] TCP cubic registered

[    1.630000] NET: Registered protocol family 17

[    1.630000] lib80211: common routines for IEEE802.11 drivers

[    1.640000] Clocks: disable unused mmcsd0

[    1.640000] Clocks: disable unused mmcsd1

[    1.640000] Clocks: disable unused spi0

[    1.640000] Clocks: disable unused spi1

[    1.640000] Clocks: disable unused spi2

[    1.640000] Clocks: disable unused spi3

[    1.640000] Clocks: disable unused spi4

[    1.640000] Clocks: disable unused pwm0

[    1.640000] Clocks: disable unused pwm1

[    1.640000] Clocks: disable unused pwm2

[    1.640000] Clocks: disable unused pwm3

[    1.640000] Clocks: disable unused timer1

[    1.640000] Clocks: disable unused timer3

[    1.640000] Clocks: disable unused emac

[    1.640000] Clocks: disable unused voice_codec

[    1.640000] Clocks: disable unused asp0

[    1.640000] Clocks: disable unused rto

[    1.640000] Clocks: disable unused mjcp

[    1.710000] nnnn===0

[    1.720000] davinci_emac_probe: using random MAC addr: 06:aa:d2:d3:a4:79

[    1.730000] emac-mii: probed

[    1.770000] UBIFS: recovery needed

[    1.810000] UBIFS: recovery completed

[    1.820000] UBIFS: mounted UBI device 0, volume 0, name "rootfs"

[    1.820000] UBIFS: file system size:   110342144 bytes (107756 KiB, 105 MiB, 869 LEBs)

[    1.830000] UBIFS: journal size:       9023488 bytes (8812 KiB, 8 MiB, 72 LEBs)

[    1.840000] UBIFS: media format:       w4/r0 (latest is w4/r0)

[    1.840000] UBIFS: default compressor: lzo

[    1.850000] UBIFS: reserved for root:  0 bytes (0 KiB)

[    1.860000] VFS: Mounted root (ubifs filesystem) on device 0:13.

[    1.860000] Freeing init memory: 112K

Runing /etc/init.d/rcS

/opt/dji/bin/sshenable: line 2: ./eth0config: not found

sulogin: no password entry for root

login[413]: root login on 'ttyS0'

#Process /etc/profile...

root@Dji-Pro:~#

In the case of a successful flashing job, the above text will just keep going as the board looks for the top board, doesn't find it and loops. This is normal and means it's all working well. Once you see the text scrolling by for 30 seconds or so, you can unplug the board and reassemble it. You've had a successful flashing job.

But if you see the below results, the NAND is still corrupt and the kernel (not just the bootloader) needs to be flashed. I haven't had success flashing the kernel on these. If you do, please reach out via the contact link below and let me know, thanks!

DM36x initialization passed!

UBL Product Vesion : DJI-UBL-1.0-rc2

Dji UBL Version: 1.51(Jun 19 2014 - 01:14:42)

Booting Catalog Boot Loader

BootMode = NAND

Starting NAND Copy...

Valid magicnum, 0xA1ACED66, found in block 0x00000019.

Valid magicnum, 0xA1ACED66, found in block 0x0000001B.

Valid magicnum, 0xA1ACED66, found in block 0x0000001D.

Valid magicnum, 0xA1ACED66, found in block 0x0000001F.

No valid boot image found!

NAND Boot failed.

Aborting...

Continue on to: Wrapping up - Section 4

Navigation

Getting Started - Section 1 - Flashing - Section 2 - Validation - Section 3 - Wrapping up - Section 4

For questions, feedback or repair service inquiries, please find my contact details here: http://scr.im/okstuv