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Seagate GoFlexNet

Supported Versions

Hardware Highlights



Architecture ARM armv5te
Vendor Marvell
bootloader U-Boot
System-On-Chip Marvell MV88F6281 A0 (DDR2) with ARM926EJ-S CPU (Marvell Feroceon)
CPU Speed 1200 MHz
Flash size 256 MiB / 1x Micron 29F2G08AAD
RAM 128 MiB / 1x Nanya NT5TU64M16DG-AC
Wireless n/a
Ethernet 1x GigE port / Marvell “Alaska” 88E1116R
USB 1x USB 2.0 port
Serial Yes
SATA 2x (data & power)

Opening the case

There are no screws - the bottom cover is held by ten plastic snap on clips, three on the sides and two on the edges. To open the case, gently pry all around with a thin screwdriver until it is open.

The serial pins are accessible without further disassembly.


port.serial general information about the serial port, serial port cable, etc.

How to connect to the Serial Port of this specific device:

NOTE: The pins to use are the ones “covered up” by the tips of the arrows, i.e. the pins in the row toward the outer edge of the PCB. (for comparison, see here)

Serial connection parameters
for Seagate GoFlexNet
115200, 8N1


port.jtag general information about the JTAG port, JTAG cable, etc.

How to connect to the JTAG Port of this specific device:
Insert photo of PCB with markings for JTAG port

Flash Layout

u-boot original flash layout
mtdparts mtd0 mtd1 mtd2 mtd3
start (hex) 0x000000 0x100000 0x500000 0x2500000
size (hex) 0x100000 0x400000 0x2000000 0xdb00000
size (MB) 1 4 32 219
name u-boot kernel rootfs data
file system raw initramfs jffs2 overlayfs


u-boot openwrt flash layout
mtdparts mtd0 mtd1
start (hex) 0x000000 0x100000
size (hex) 0x100000 0xff00000
size (MB) 1 255
name u-boot ubi
file system raw ubifs
partitions kernel, rootfs, rootfs_data

Specific Configuration


The default network configuration is:

Interface Name Description Default configuration
eth0 Ethernet port DHCP


The GoFlexNet cannot be put into failsafe mode by pressing the button.

It can however be put in failsafe mode using serial console and pressing 'f' and <enter> when prompted during boot-up


The GoFlexNet's only button is not configurable and inevitably performs a hard reset when pressed, the button open the bridge between the positive pole and the power cord.

Crypto Hardware Acceleration


To enable 3.5“ disks (3 pins sata power to +12V DC):

NOTE: The ellipse in the picture indicates three pins for Serial ATA +12 V. (Multiple pins are used for current (Ampere) considerations, compare Serial_ATA#Power_connectors.)

NOTE: The board is not able to provide enough wattage @5v to drive standard 3.5” hard disks, and even with 'green' disks might not be powerful enough to drive 2 3.5“ hd or use a 3.5” hd and a 2.5“ at the same time (i.e. Raid1). Using a 'green' 3.5” and a regular 2.5“ not at the same time works perfectly for me.



Connect device to Ethernet port. To prevent automatic updates by cloud engines (which will disable ssh access), use a separate switch or disconnect your router from the internet. If the ssh access was disabled by the automatic cloud engine update service, you need to login there and re-activate ssh. On later versions the ssh access is already disabled. The option on the pogoplug site to enable ssh is missing or may be dependent on a public ipv4 and open ssh port on the router.

Find IP address, BE and EF are the last two bytes of the MAC of your device (printed on the bottom of the GoFlexNet)

root@host ~ # ifconfig eth0 
root@host ~ # nmap -e eth0 -sP $(printf "169.254.%d.%d" 0xbe 0xef)

Connect to IP address via ssh (root / stxadmin) to see if it works.

Backup original firmware

Login to the original firmware via SSH (enable it first in popoplug site) or Serial cable (nokia's CA-52, DKU-5 and etc ttl…). Plug the flash drive (FAT32) to USB port in Seagate GoFlex Net, then:

mkdir /tmp/backup
mount /dev/sda1 /tmp/backup
cd /tmp/backup
chmod +x nanddump
./nanddump -nof uboot-mtd0-dump /dev/mtd0
./nanddump -nof uboot-original -s 0 -l 0x80000 /dev/mtd0
./nanddump -nof uImage-mtd1-dump /dev/mtd1
./nanddump -nof rootfs-mtd2-dump /dev/mtd2
umount /dev/sda1

To create an image of mtd0, you need to dump the nand without ecc. using “dd if=/dev/mtd0 of=mtd0.DOESNOTWORK” will automatically do ecc for you and will result in a corrupt image.

Restore original firmware via serial cable and tftp-server

#set goflex net ip
setenv ipaddr ''
#set tftp-server ip
setenv serverip ''

#original uImage (backuped before)
tftpboot 0x800000 uImage-mtd1-dump
nand erase 0x100000 0x400000
nand write.e 0x800000 0x100000 0x400000

#original rootfs (backuped before)
tftpboot 0x800000 rootfs-mtd2-dump
nand erase 0x500000 0x2000000
nand write.e 0x800000 0x500000 0x2000000


Hit any key to stop autoboot:  0

setenv bootcmd 'nand read.e 0x800000 0x100000 0x300000; setenv bootargs $(console) $(bootargs_root); bootm 0x800000'

#change value to your device
setenv ethaddr '00:10:75:26:3D:9F'
setenv ceserialno 'NA1Y0EG1'
setenv ceboardver 'DISCOVERY:0.1'


Installation over sysupgrade (serial cable needed)

Prepare on PC

Download files

latest uboot:

openwrt current:

or openwrt snapshot:

Start any tftp-server in same subnet and put files uboot, initramfs-uImage to tftp-server

Install u-boot

in serial console hit any key to stop autoboot in the u-boot and set goflexnet ip, tftp-server ip, set your mac-address from bottom of the machine:

setenv serverip ''
setenv ipaddr ''
setenv ethaddr '00:10:75:xx:xx:xx'

download from tftp-server uboot.2017.07-tld-1.goflexnet.mtd0.kwb file to RAM start offset 0x6400000

tftp 0x6400000 uboot.2017.07-tld-1.goflexnet.mtd0.kwb


tftpboot 0x6400000 uboot.2017.07-tld-1.goflexnet.mtd0.kwb

erase nand start from 0x0 size 0x100000

nand erase 0x0 0x100000

write nand from RAM start offset 0x6400000 to nand start 0x0 size ${filesize} (auto taked from tftp transfer)

nand write 0x6400000 0x0 ${filesize}

reboot device


now you are rebooting in the new u-boot

Run OpenWrt initramfs

Hit any key to stop autoboot in the u-boot and set goflexnet ip, tftp-server ip, set your mac-address from bottom of the machine:

setenv serverip ''
setenv ipaddr ''
setenv ethaddr '00:10:75:xx:xx:xx'

we need change mtd partitions (and set linux kernel boot options, e.g. ipv6.disable=1)

setenv mtdparts 'mtdparts=orion_nand:1M(u-boot),-(ubi)'
setenv bootcmd 'setenv bootargs ${console} ${mtdparts} ipv6.disable=1; ubi part ubi; ubi read 0x6400000 kernel; bootm 0x6400000'

after this, need to erase new ubi partition:

nand erase.part ubi

download from tftp-server file openwrt-19.07.2-kirkwood-seagate_goflexnet-initramfs-uImage to RAM in start offset 0x6400000

tftp 0x6400000 openwrt-19.07.2-kirkwood-seagate_goflexnet-initramfs-uImage

or snapshot openwrt-kirkwood-seagate_goflexnet-initramfs-uImage:

tftp 0x6400000 openwrt-kirkwood-seagate_goflexnet-initramfs-uImage

boot from RAM offset 0x6400000

bootm 0x6400000

Sysupgrade OpenWrt

in loaded openwrt linux:


or snapshot:



  _______                     ________        __
 |       |.-----.-----.-----.|  |  |  |.----.|  |_
 |   -   ||  _  |  -__|     ||  |  |  ||   _||   _|
 |_______||   __|_____|__|__||________||__|  |____|
          |__| W I R E L E S S   F R E E D O M
 OpenWrt SNAPSHOT, r12576-f2d976f06e

#for fw_printenv, fw_setenv

echo '/dev/mtd0 0xc0000 0x20000 0x20000' >/etc/fw_env.config

uboot rescue (kwboot)

gcc -o kwboot kwboot.c
chmod +x ./kwboot

warning, compiled kwboot not work in BSD systems (MacOS too), do it only in linux

type this command, but not run

kwboot -b ./uboot.2017.07-tld-1.goflexnet.mtd0.kwb /dev/ttyUSB0 -p

plug power to bricked device, slowly count 1000, 1001, 1002 and press enter.

now you must write uboot to nand via TFTP/USB

redstone63 rescue

all files are here: redstone_v63


ce_kernel_redstone_v63.img: c31ca085da5999651384cf4bb9978692

ce_ramdisk_v2.0b.img.gz: 80787eea2389a1fe96ffc6715ec65d4c

setenv serverip ''
setenv ipaddr ''
nand erase 0x100000 0x400000
tftp 0x800000 ce_kernel_redstone_v63.img
nand write.e 0x800000 0x100000 0x1e30f0
tftp 0x1000000 ce_ramdisk_v2.0b.img.gz
setenv bootargs $(console) root=/dev/mtdblock2 initrd=0x1000000,0xb39a59
bootm 0x800000

Recovery of a bricked uboot *without* jtag

Unlike the dockstar, the goflexnet has a newer bootrom which supports serial boot. [,7852,7852]

tar jxf u-boot-2013.10.tar.bz2
cd u-boot-2013.10/tools/
gcc -o kwboot kwboot.c
./kwboot -b /tmp/openwrt-kirkwood-goflexhome-u-boot.kwb -t -p -B 115200 /dev/ttyUSB0

Now the uboot is loaded into ram and executed. You have to flash u-boot into nand. See below how to flash it.


information from console of BusPirate (SeeedStudio) “HiZ>i” - Bus Pirate v3.5 Firmware v6.1 r1676 Bootloader v4.4 in bash of Cygwin

git clone git://
cd code
./configure --enable-maintainer-mode --disable-werror --disable-at91rm9200 --enable-buspirate
make && make install && make clean

put buspirate.cfg to /usr/local/share/openocd/scripts/interface/
put dockstar.cfg to /usr/local/share/openocd/scripts/board/
put uboot.mtd0.goflexnet.original.kwb from to /usr/local/share/openocd/scripts/

cd /usr/local/share/openocd/scripts

(Seeed Studio BusPirate -  ( - Seeed Studio BusPirate)
(            nc         -   1  nc   )  ( 10  GND   -    serial cable GND   )
(     6  blue   (aux)   -   2  IN   )  (  9  RxD   -    serial cable TxD   )
(     8  gray   (mosi)  -   3  TDI  )  (  8  TxD   -    serial cable RxD   )
(     9  white  (cs)    -   4  TMS  )  (  7  CN    -           nc          )
(     7  purple (clk)   -   5  TCK  )  (  6  DOT   -    10  black (miso)   )
power on, serial, buspirate

openocd.exe -f board/dockstar.cfg

in telnet 4444:
type 'halt' - press reset - press enter - release reset

(repeat while not see this:
target state: halted
target halted in ARM state due to debug-request, current fashion: Supervisor
CPSR: 0x000000d3 pc: 0xffff0000
MMU: disabled, D-Cache: disabled, I-Cache: disabled
if you not see this - you can try command 'soft_reset_halt')


(here are two options to choose from)
load_image uboot.mtd0.goflexnet.original.kwb 0x800000
(wait ~214 sec)
resume 0x800200
or you can erease nand and native write to nand:
nand probe 0
nand erase 0 0x0 0xa0000
nand write 0 uboot.mtd0.goflexnet.original.kwb 0 oob_softecc_kw
(wait ~569 sec)
(then poweroff goflexnet & buspirate, wait 5 secs adns poweron goflexnet)

in serial console:
Hit any key to stop autoboot:  0
nand erase
nand write.e 0x800000 0x0 0x80000


interface buspirate
buspirate_port /dev/ttyS15
buspirate_speed fast #normal or fast
buspirate_vreg 0
buspirate_mode open-drain
buspirate_pullup 0
reset_config srst_only


# Marvell SheevaPlug # I'm using a wiggler compatible cable source [find interface/buspirate.cfg] source [find target/feroceon.cfg] jtag_khz 500 jtag_nsrst_delay 500 $_TARGETNAME configure \ -work-area-phys 0x100000 \ -work-area-size 65536 \ -work-area-backup 0 # Disabled for the dockstar #arm7_9 dcc_downloads enable # this assumes the hardware default peripherals location before u-Boot moves it set _FLASHNAME $_CHIPNAME.flash nand device $_FLASHNAME orion 0 0xd8000000 proc dockstar_init { } { # We need to assert DBGRQ while holding nSRST down. # However DBGACK will be set only when nSRST is released. # Furthermore, the JTAG interface doesn't respond at all when # the CPU is in the WFI (wait for interrupts) state, so it is # possible that initial tap examination failed. So let's # re-examine the target again here when nSRST is asserted which # should then succeed. jtag_reset 0 1 feroceon.cpu arp_examine halt 0 jtag_reset 0 0 wait_halt arm mcr 15 0 0 1 0 0x00052078 mww 0xD0001400 0x43000C30 mww 0xD0001404 0x39543000 mww 0xD0001408 0x22125451 mww 0xD000140C 0x00000833 mww 0xD0001410 0x000000CC mww 0xD0001414 0x00000000 mww 0xD0001418 0x00000000 mww 0xD000141C 0x00000C52 mww 0xD0001420 0x00000042 mww 0xD0001424 0x0000F17F mww 0xD0001428 0x00085520 mww 0xD000147c 0x00008552 # 1st bank is 128 MB mww 0xD0001504 0x07FFFFF1 # 2nd bank of DRAM is not used mww 0xD0001508 0x00000000 mww 0xD000150C 0x00000000 # Commented the 3 following lines #mww 0xD0001504 0x0FFFFFF1 #mww 0xD0001508 0x10000000 #mww 0xD000150C 0x0FFFFFF5 mww 0xD0001514 0x00000000 mww 0xD000151C 0x00000000 mww 0xD0001494 0x003C0000 mww 0xD0001498 0x00000000 mww 0xD000149C 0x0000F80F mww 0xD0001480 0x00000001 mww 0xD0020204 0x00000000 mww 0xD0020204 0x00000000 mww 0xD0020204 0x00000000 mww 0xD0020204 0x00000000 mww 0xD0020204 0x00000000 mww 0xD0020204 0x00000000 mww 0xD0020204 0x00000000 mww 0xD0020204 0x00000000 mww 0xD0020204 0x00000000 mww 0xD0020204 0x00000000 mww 0xD0020204 0x00000000 mww 0xD0020204 0x00000000 mww 0xD0020204 0x00000000 mww 0xD0020204 0x00000000 mww 0xD0020204 0x00000000 mww 0xD0020204 0x00000000 mww 0xD0020204 0x00000000 mww 0xD0020204 0x00000000 mww 0xD0020204 0x00000000 mww 0xD0020204 0x00000000 mww 0xD0020204 0x00000000 mww 0xD0020204 0x00000000 mww 0xD0020204 0x00000000 mww 0xD0020204 0x00000000 mww 0xD0020204 0x00000000 mww 0xD0020204 0x00000000 mww 0xD0020204 0x00000000 mww 0xD0020204 0x00000000 mww 0xD0020204 0x00000000 mww 0xD0020204 0x00000000 mww 0xD0020204 0x00000000 mww 0xD0020204 0x00000000 mww 0xD0020204 0x00000000 mww 0xD0020204 0x00000000 mww 0xD0020204 0x00000000 mww 0xD0020204 0x00000000 mww 0xD0020204 0x00000000 mww 0xD0010000 0x01111111 mww 0xD0010004 0x11113322 mww 0xD0010008 0x00001111 mww 0xD0010418 0x003E07CF mww 0xD001041C 0x000F0F0F mww 0xD0010470 0x01C7D943 } proc sheevaplug_reflash_uboot { } { # reflash the u-Boot binary and reboot into it sheevaplug_init nand probe 0 nand erase 0 0x0 0xa0000 nand write 0 uboot.bin 0 oob_softecc_kw resume } proc sheevaplug_reflash_uboot_env { } { # reflash the u-Boot environment variables area sheevaplug_init nand probe 0 nand erase 0 0xa0000 0x40000 nand write 0 uboot-env.bin 0xa0000 oob_softecc_kw resume } proc sheevaplug_load_uboot { } { # load u-Boot into RAM and execute it sheevaplug_init #load_image uboot.elf #verify_image uboot.elf load_image u-boot verify_image u-boot resume 0x00600000 } proc dockstar_reset_cpu { } { # System and User mode registers # r0: 00000000 r1: 00000000 r2: 00000000 r3: 00000000 # r4: 00000000 r5: 00000000 r6: 00000000 r7: 00000000 # r8: 00000000 r9: 00000000 r10: 00000000 r11: 00000000 # r12: 00000000 sp_usr: 7dddee86 lr_usr: dffebe46 pc: ffff0a42 # cpsr: 400000f3 reg r1 0 reg r2 0 reg r3 0 reg r4 0 reg r5 0 reg r6 0 reg r7 0 reg r8 0 reg r9 0 reg r10 0 reg r11 0 reg r12 0 reg sp_usr 0 reg lr_usr 0 reg pc 0 # Set the CPU in Supervisor mode reg cpsr 0x13 # FIQ mode shadow registers # r8_fiq: fbcfff64 r9_fiq: d7dfafd6 r10_fiq: 1fff6d2e r11_fiq: 1db65df4 # r12_fiq: ff5a6de4 sp_fiq: 745fe7d5 lr_fiq: 89f7ae3e spsr_fiq: 00000000 reg r8_fiq 0 reg r9_fiq 0 reg r10_fiq 0 reg r11_fiq 0 reg r12_fiq 0 reg sp_fiq 0 reg lr_fiq 0 reg spsr_fiq 0 # Supervisor mode shadow registers # sp_svc: fffeff84 lr_svc: ffff0a43 spsr_svc: 00000000 reg sp_svc 0 reg lr_svc 0 reg spsr_svc 0 # Abort mode shadow registers # sp_abt: 51fe66f7 lr_abt: d7abaef7 spsr_abt: 00000000 reg sp_abt 0 reg lr_abt 0 reg spsr_abt 0 # IRQ mode shadow registers # sp_irq: 7fdb4ed5 lr_irq: 6d41122e spsr_irq: 00000000 reg sp_irq 0 reg lr_irq 0 reg spsr_irq 0 # Undefined instruction mode shadow registers # sp_und: 75ffef7e lr_und: d75b6cd1 spsr_und: 00000000 reg sp_und 0 reg lr_und 0 reg spsr_und 0 }

original/default uBoot environment (printenv/setenv)

bootargs_root=root=/dev/mtdblock2 ro
bootargs=console=ttyS0,115200 root=/dev/mtdblock2 ro
bootcmd=nand read.e 0x800000 0x100000 0x300000; setenv bootargs $(console) $(bootargs_root); bootm 0x800000


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toh/seagate/goflexnet.txt · Last modified: 2020/03/30 22:23 by plasticassius