Hola de nuevo compañeros.
Ya he podido recuperar el WDR3600 ver1.5, solo que a través de otro metodo, que aunque ya lo habia leido por ahi y probado repetidas veces, nunca logré que funcionase...
http://www.theoutpost.org/6-techy/tp-link-wdr3600-recovery-without-serial/... la diferencia de que ahora me haya funcionado es que he utilizado el USB-TTL para monitorizar el proceso y esto me ha ayudado a descubrir los errores para enmendarlos.
El metodo dice más o menos que encendiendo el WDR3600 mientras se mantiene pulsado el boton "Reset/WPS" durante aproximadamente 7 segundos, el WDR3600 nos pedirá un firmware con el nombre "wdr3600v1_tp_recovery.bin".
Teniendo conectado el USB-TTL y curiosamente en mi caso y como os comentaba en el post anterior, lo tengo configurado a 115200 7 N 1, me aparece lo siguiente:
U-Boot 1.1.4 (May 18 2015 - 19:45:42)
U-boot DB120
DRAM: 128 MB
id read 0x100000ff
flash size 8MB, sector count = 128
Flash: 8 MB
Using default environment
PCIe Reset OK!!!!!!
In: serial
Out: serial
Err: serial
Net: ag934x_enet_initialize...
No valid address in Flash. Using fixed address
wasp reset mask:c03300
WASP ----> S17 PHY *
: cfg1 0x7 cfg2 0x7114
eth0: ba:be:fa:ce:08:41
athrs17_reg_init: complete
eth0 up
eth0
dup 1 speed 1000
Using eth0 device
TFTP from server 192.168.0.66; our IP address is 192.168.0.86
Filename 'wdr3600v1_tp_recovery.bin'.Subo aqui el archivo 'wdr3600v1_tp_recovery.bin' por el que está preguntando el router:
https://www.mediafire.com/file/omss46zk6mkq0a1/wdr3600v1_tp_recovery.binPues nada, a partir de esta información todo ha sido muy sencillo.
-Cambio la IP de la tarjeta ethernet del ordenador y pongo esta IP fija:
IPv4: 192.168.0.66
Netmask: 255.255.255.0
-Arranco un programa TFTP, le indico esta IP y donde se encuentra el archivo del firmware 'wdr3600v1_tp_recovery.bin'.
-Enciendo el router manteniendo pulsado el boton "Reset/WPS" durante aproximadamente 7 segundos.
.... y mira por donde, ya se traga el firmware.
U-Boot 1.1.4 (May 18 2015 - 19:45:42)
U-boot DB120
DRAM: 128 MB
id read 0x100000ff
flash size 8MB, sector count = 128
Flash: 8 MB
Using default environment
PCIe Reset OK!!!!!!
In: serial
Out: serial
Err: serial
Net: ag934x_enet_initialize...
No valid address in Flash. Using fixed address
wasp reset mask:c03300
WASP ----> S17 PHY *
: cfg1 0x7 cfg2 0x7114
eth0: ba:be:fa:ce:08:41
athrs17_reg_init: complete
eth0 up
eth0
dup 1 speed 1000
Using eth0 device
TFTP from server 192.168.0.66; our IP address is 192.168.0.86
Filename 'wdr3600v1_tp_recovery.bin'.
Load address: 0x80060000
Loading: #################################################################
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done
Bytes transferred = 8192512 (7d0200 hex)
original_product_id = 36000001
original_product_ver = 01
recovery_product_id = 36000001
recovery_product_ver = 01
auto update firmware: product id verify sucess!
Firmware recovery: product id verify sucess!
Firmware recovery: filesize = 0x7d0200.
boot up image
First 0x2 last 0x7c sector size 0x10000
124
Erased 123 sectors
Copy to Flash... write addr: 9f020000
done
U-Boot 1.1.4 (May 18 2015 - 19:45:42)
U-boot DB120
DRAM: 128 MB
id read 0x100000ff
flash size 8MB, sector count = 128
Flash: 8 MB
Using default environment
PCIe Reset OK!!!!!!
In: serial
Out: serial
Err: serial
Net: ag934x_enet_initialize...
No valid address in Flash. Using fixed address
wasp reset mask:c03300
WASP ----> S17 PHY *
: cfg1 0x7 cfg2 0x7114
eth0: ba:be:fa:ce:08:41
athrs17_reg_init: complete
eth0 up
eth0
Autobooting in 1 seconds
## Booting image at 9f020000 ...
Uncompressing Kernel Image ... OK
Starting kernel ...
Booting Atheros AR934x
[ 0.000000] Linux version 2.6.31--LSDK-9.2.0_U6.616 (root@liaozhiming) (gcc version 4.3.3 (GCC) ) #1 Mon May 18 19:48:32 CST 2015
[ 0.000000] Ram size passed from bootloader =128M
[ 0.000000] flash_size passed from bootloader = 8
[ 0.000000] CPU revision is: 0001974c (MIPS 74Kc)
[ 0.000000] ath_sys_frequency: cpu srif ddr srif cpu 560 ddr 450 ahb 225
[ 0.000000] Determined physical RAM map:
[ 0.000000] memory: 08000000 @ 00000000 (usable)
[ 0.000000] Zone PFN ranges:
[ 0.000000] Normal 0x00000000 -> 0x00008000
[ 0.000000] Movable zone start PFN for each node
[ 0.000000] early_node_map[1] active PFN ranges
[ 0.000000] 0: 0x00000000 -> 0x00008000
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 32512
[ 0.000000] Kernel command line: console=ttyS0,115200 root=31:02 rootfstype=squashfs init=/sbin/init mtdparts=ath-nor0:128k(u-boot),1024k(kernel),6848k(rootfs),128k(config),64k(ART) mem=128M
[ 0.000000] PID hash table entries: 512 (order: 9, 2048 bytes)
[ 0.000000] Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
[ 0.000000] Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
[ 0.000000] Primary instruction cache 64kB, VIPT, 4-way, linesize 32 bytes.
[ 0.000000] Primary data cache 32kB, 4-way, VIPT, cache aliases, linesize 32 bytes
[ 0.000000] Writing ErrCtl register=00000000
[ 0.000000] Readback ErrCtl register=00000000
[ 0.000000] Memory: 112896k/131072k available (1856k kernel code, 17996k reserved, 432k data, 120k init, 0k highmem)
[ 0.000000] NR_IRQS:128
[ 0.000000] plat_time_init: plat time init done
[ 0.000000] Calibrating delay loop... 279.55 BogoMIPS (lpj=559104)
[ 0.096000] Mount-cache hash table entries: 512
[ 0.096000]
[ 0.096000] ****************ALLOC***********************
[ 0.096000] Packet mem: 8026e4c0 (0xe00000 bytes)
[ 0.096000] ********************************************
[ 0.096000]
[ 0.096000] NET: Registered protocol family 16
[ 0.096000] PCI init:ath_pcibios_init
[ 0.096000] ath_pcibios_init(294): PCI CMD write: 0x356
[ 0.096000] registering PCI controller with io_map_base unset
[ 0.096000] bio: create slab <bio-0> at 0
[ 0.096000] pci 0000:00:00.0: PME# supported from D0 D1 D3hot
[ 0.096000] pci 0000:00:00.0: PME# disabled
[ 0.096000] Returning IRQ 64
[ 0.100000] NET: Registered protocol family 2
[ 0.100000] IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.100000] TCP established hash table entries: 4096 (order:32768 bytes)
[ 0.100000] TCP bind hash table entries: 4096 (order: 2, 16384 bytes)
[ 0.100000] TCP: Hash tables configured (established 4096 bind 4096)
[ 0.100000] TCP reno registered
[ 0.100000] NET: Registered protocol family 1
[ 0.100000] ATH GPIOC major 0
[ 0.100000] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[ 0.100000] msgmni has been set to 220
[ 0.100000] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 254)
[ 0.100000] io scheduler noop registered
[ 0.100000] io scheduler deadline registered (default)
[ 0.100000] Serial: 8250/16550 driver, 1 ports, IRQ sharing disabled
[ 0.104000] serial8250.0: ttyS0 at MMIO 0xb8020000 (irq = 19) is a 16550A
[ 0.104000] console [ttyS0] enabled
[ 0.404000] PPP generic driver version 2.4.2
[ 0.408000] NET: Registered protocol family 24
[ 0.412000] 5 cmdlinepart partitions found on MTD device ath-nor0
[ 0.416000] Creating 5 MTD partitions on "ath-nor0":
[ 0.424000] 0x000000000000-0x000000020000 : "u-boot"
[ 0.428000] 0x000000020000-0x000000120000 : "kernel"
[ 0.432000] 0x000000120000-0x0000007d0000 : "rootfs"
[ 0.440000] 0x0000007d0000-0x0000007f0000 : "config"
[ 0.444000] 0x0000007f0000-0x000000800000 : "ART"
[ 0.448000] ->Oops: flash id 0xef4017 .
[ 0.452000] ----TP IGMP has been init------
[ 0.456000] TCP cubic registered
[ 0.460000] NET: Registered protocol family 10
[ 0.468000] NET: Registered protocol family 17
[ 0.472000] 802.1Q VLAN Support v1.8 Ben Greear <greearb@candelatech.com>
[ 0.476000] All bugs added by David S. Miller <davem@redhat.com>
[ 0.484000] athwdt_init: Registering WDT success
[ 0.488000] ath_otp_init: Registering OTP success
[ 0.492000] ath_clksw_init: Registering Clock Switch Interface success
[ 0.508000] VFS: Mounted root (squashfs filesystem) readonly on device 31:2.
[ 0.516000] Freeing unused kernel memory: 120k freed
init started: BusyBox v1.01 (2015.04.24-06:01+0000) multi-call binary
This Board use 2.6.31
insmod: cannot open module `/lib/modules/2.6.31/kernel/x_tables.ko': No such file or directory
insmod: cannot open module `/lib/modules/2.6.31/kernel/xt_tcpudp.ko': No such file or directory
[ 1.688000] xt_time: kernel timezone is -0000
[ 1.884000] nf_conntrack version 0.5.0 (2048 buckets, 8192 max)
[ 1.888000] CONFIG_NF_CT_ACCT is deprecated and will be removed soon. Please use
[ 1.896000] nf_conntrack.acct=1 kernel parameter, acct=1 nf_conntrack module option or
[ 1.904000] sysctl net.netfilter.nf_conntrack_acct=1 to enable it.
[ 2.340000] ip_tables: (C) 2000-2006 Netfilter Core Team
insmod: cannot open module `/lib/modules/2.6.31/kernel/iptable_raw.ko': No such file or directory
insmod: cannot open module `/lib/modules/2.6.31/kernel/flashid.ko': No such file or directory
[ 2.736000] PPPoL2TP kernel driver, V1.0
[ 2.756000] PPTP driver version 0.8.3
insmod: cannot open module `/lib/modules/2.6.31/kernel/harmony.ko': No such file or directory
(none) mips #1 Mon May 18 19:48:32 CST 2015 (none)
(none) login: [ 6.992000] Now flash open!
[ 6.996000] Read from 0X20000 to 0X20120: OK
[ 7.524000] Now flash open!
[ 7.528000] Read from 0X7D0000 to 0X7E1F0C: OK
[ 7.556000] Now flash open!
[ 7.560000] Read from 0X1FC00 to 0X1FC06: OK
[ 7.664000] Now flash open!
[ 7.664000] Read from 0X1FE00 to 0X1FE08: OK
[ 7.772000] Now flash open!
[ 7.772000] Erase from 0X7D0000 to 0X7E1F0C:.
[ 7.968000] Program from 0X7D0000 to 0X7E1F0C:.
[ 8.336000] write successfully
[ 8.344000] Now flash open!
[ 8.344000] Read from 0X1FE00 to 0X1FE08: OK
[ 8.348000] Now flash open!
[ 8.352000] Erase from 0X7D0000 to 0X7E1F0C:.
[ 8.556000] Program from 0X7D0000 to 0X7E1F0C:.
[ 8.908000] write successfully
[ 8.912000] Now flash open!
[ 8.916000] Erase from 0X7D0000 to 0X7E1F0C:.
[ 9.112000] Program from 0X7D0000 to 0X7E1F0C:.
[ 9.472000] write successfully
[ 9.808000] ATHR_GMAC: Length per segment 1536
[ 9.812000] ATHR_GMAC: fifo cfg 3 01f00140
[ 9.816000] ATHR_GMAC: RX TASKLET - Pkts per Intr:100
[ 9.820000] ATHR_GMAC: Mac address for unit 0:bfff0000
[ 9.824000] ATHR_GMAC: ff:ff:ff:ff:ff:ff
[ 10.380000] ATHR_GMAC: Max segments per packet : 1
[ 10.384000] ATHR_GMAC: Max tx descriptor count : 128
[ 10.388000] ATHR_GMAC: Max rx descriptor count : 128
[ 10.396000] ATHR_GMAC: Mac capability flags : 2381
[ 10.428000] athr_gmac_ring_alloc Allocated 2048 at 0x87b12000
[ 10.436000] athr_gmac_ring_alloc Allocated 2048 at 0x87b10800
[ 10.740000] WASP ----> S17 PHY *
[ 10.744000] Setting Drop CRC Errors, Pause Frames and Length Error frames
[ 10.816000] Hello, nat module!
[ 10.820000] thread: napt_ct_scan create success pid:118
[ 10.824000] netlink_kernel_create succeeded at tp_rule_nl_prot: [29]
[ 10.832000] isis_ip_intf_entry_add id[0] for vid[1]
[ 10.840000] isis_ip_intf_entry_add id[1] for vid[2]
[ 10.844000]
[ 10.844000] ######## S17 SSDK init succeeded! ########
[ 10.864000] ++++ athrs17_igmp_setup once
[ 10.892000] athrs17_reg_init:done
[ 10.896000] Setting PHY...
[ 11.900000] napt_ct_scan_thread: time: 4
[ 11.908000] ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 11.952000] device eth0.1 entered promiscuous mode
[ 11.964000] Now flash open!
[ 11.968000] Read from 0X1FC00 to 0X1FC06: OK
[ 11.976000] isis_ip_intf_entry_add id[0] for vid[1]
[ 11.980000] Lan UDP checksum 0 adding rule #3
[ 12.012000] ACL is not yet enabled. Enabling...
[ 12.020000] isis_ip_intf_entry_add id[1] for vid[2]
[ 12.024000] Wan UDP checksum 0 adding rule #2
[ 12.044000] ttl adding rule #0
[ 12.084000] device eth0 entered promiscuous mode
[ 12.144000] br0: port 1(eth0.1) entering forwarding state
[ 13.716000] Adding ACL rules 1 - wan to lan, dst ip is lan net
[ 14.320000] nf_conntrack_rtsp v0.6.21 loading
[ 14.340000] nf_nat_rtsp v0.6.21 loading
[ 14.388000] insmod nat_sip over !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
[ 14.400000]
[ 14.400000] Enet:0 port1 up
[ 14.404000] ATH_MAC_TIMER: enet unit:0 is up...
[ 14.408000] RGMii 1000Mbps full duplex
[ 14.412000] ATH_MAC_TIMER: done cfg2 0x7215 ifctl 0x0 miictrl
[ 14.420000] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
usrconf_allocate_memory 212 shmget success id:43511 32769
[ 14.716000] asf: module license 'Proprietary' taints kernel.
[ 14.724000] Disabling lock debugging due to kernel taint
[ 15.292000] ath_hal: 0.9.17.1 (AR5416, AR9380, REGOPS_FUNC, WRITE_EEPROM, 11D)
[ 15.412000] ath_rate_atheros: Copyright (c) 2001-2005 Atheros Communications, Inc, All Rights Reserved
[ 15.444000] ath_dfs: Version 2.0.0
[ 15.444000] Copyright (c) 2005-2006 Atheros Communications, Inc. All Rights Reserved
[ 15.644000] Now flash open!
[ 15.644000] Read from 0X20000 to 0X20120: OK
[ 15.796000] ath_dev: Copyright (c) 2001-2007 Atheros Communications, Inc, All Rights Reserved
[ 16.576000] ath_ahb: 9.2.0_U10.1020 (Atheros/multi-bss)
[ 16.580000] __ath_attach: Set global_scn[0]
[ 16.584000] ACBKMinfree = 48
[ 16.588000] ACBEMinfree = 32
[ 16.592000] ACVIMinfree = 16
[ 16.592000] ACVOMinfree = 0
[ 16.596000] CABMinfree = 48
[ 16.600000] UAPSDMinfree = 0
[ 16.612000] Restoring Cal data from Flash
[ 16.616000] dfs_attach: use DFS enhancements
[ 16.624000] DFS min filter rssiThresh = 18
[ 16.628000] DFS max pulse dur = 151 ticks
[ 16.636000] ath_get_caps[5108] rx chainmask mismatch actual 3 sc_chainmak 0
[ 16.644000] ath_get_caps[5083] tx chainmask mismatch actual 3 sc_chainmak 0
[ 16.656000] SC Callback Registration for wifi0
[ 16.660000] wifi0: Atheros 9340: mem=0xb8100000, irq=2
[ 16.668000] ath_pci: 9.2.0_U10.1020 (Atheros/multi-bss)
[ 16.672000] __ath_attach: Set global_scn[1]
[ 16.676000] ACBKMinfree = 48
[ 16.680000] ACBEMinfree = 32
[ 16.684000] ACVIMinfree = 16
[ 16.684000] ACVOMinfree = 0
[ 16.688000] CABMinfree = 48
[ 16.692000] UAPSDMinfree = 0
[ 16.700000] Restoring Cal data from Flash
[ 16.708000] dfs_attach: use DFS enhancements
[ 16.716000] DFS min filter rssiThresh = 18
[ 16.720000] DFS max pulse dur = 151 ticks
[ 16.724000] ath_get_caps[5108] rx chainmask mismatch actual 3 sc_chainmak 0
[ 16.732000] ath_get_caps[5083] tx chainmask mismatch actual 3 sc_chainmak 0
[ 16.748000] SC Callback Registration for wifi1
[ 16.752000] wifi1: Atheros 9580: mem=0x10000000, irq=64 hw_base=0xb0000000
[ 16.976000] wlan_vap_create : enter. devhandle=0x87bd82c0, opmode=IEEE80211_M_HOSTAP, flags=0x1
[ 16.988000] wlan_vap_create : exit. devhandle=0x87bd82c0, opmode=IEEE80211_M_HOSTAP, flags=0x1.
[ 16.996000] VAP device ath0 created
[ 17.160000]
[ 17.160000] DES SSID SET=TP-LINK_2.4GHz_D53C04
[ 17.172000] ieee80211_ioctl_siwmode: imr.ifm_active=131712, new mode=3, valid=1
[ 23.140000] device ath0 entered promiscuous mode
[ 23.144000] br0: port 2(ath0) entering forwarding state
[ 23.756000] ieee80211_ioctl_siwmode: imr.ifm_active=918144, new mode=3, valid=1
[ 23.772000] br0: port 2(ath0) entering disabled state
[ 23.976000]
[ 23.976000] DES SSID SET=TP-LINK_2.4GHz_D53C04
[ 24.008000] br0: port 2(ath0) entering forwarding state
[ 25.896000] br0: port 2(ath0) entering disabled state
[ 25.956000] br0: starting userspace STP failed, starting kernel STP
[ 25.992000] br0: topology change detected, propagating
[ 25.996000] br0: port 2(ath0) entering forwarding state
[ 26.048000] wlan_vap_create : enter. devhandle=0x86c942c0, opmode=IEEE80211_M_HOSTAP, flags=0x1
[ 26.056000] wlan_vap_create : exit. devhandle=0x86c942c0, opmode=IEEE80211_M_HOSTAP, flags=0x1.
[ 26.064000] VAP device ath1 created
[ 26.188000]
[ 26.188000] DES SSID SET=TP-LINK_5GHz_D53C05
[ 26.204000] ieee80211_ioctl_siwmode: imr.ifm_active=66176, new mode=3, valid=1
[ 30.612000] Found best 11na chan: 44
[ 32.084000] br0: port 1(eth0.1) entering disabled state
[ 32.108000] br0: topology change detected, propagating
[ 32.112000] br0: port 1(eth0.1) entering forwarding state
[ 32.136000] device ath1 entered promiscuous mode
[ 32.140000] br0: topology change detected, propagating
[ 32.148000] br0: port 3(ath1) entering forwarding state
[ 32.184000] ieee80211_ioctl_siwmode: imr.ifm_active=852608, new mode=3, valid=1
[ 32.192000] br0: port 3(ath1) entering disabled state
[ 32.404000]
[ 32.404000] DES SSID SET=TP-LINK_5GHz_D53C05
[ 32.428000] br0: topology change detected, propagating
[ 32.432000] br0: port 3(ath1) entering forwarding state
[ 34.204000] br0: port 3(ath1) entering disabled state
[ 34.264000] br0: topology change detected, propagating
[ 34.268000] br0: port 3(ath1) entering forwarding state
[ 34.720000] fuse init (API version 7.12)
[ 34.928000] usbcore: registered new interface driver usbfs
[ 34.932000] usbcore: registered new interface driver hub
[ 34.940000] usbcore: registered new device driver usb
[ 34.972000] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 35.020000] Port Status 1c000004
[ 35.020000] ath-ehci ath-ehci.0: ATH EHCI
[ 35.024000] ath-ehci ath-ehci.0: new USB bus registered, assigned bus number 1
[ 35.036000] ehci_reset Intialize USB CONTROLLER in host mode: 13
[ 35.040000] ehci_reset Port Status 1c000000
[ 35.044000] ath-ehci ath-ehci.0: irq 3, io mem 0x1b000000
[ 35.052000] ehci_reset Intialize USB CONTROLLER in host mode: 13
[ 35.060000] ehci_reset Port Status 1c000000
[ 35.076000] ath-ehci ath-ehci.0: USB 2.0 started, EHCI 1.00
[ 35.080000] usb usb1: configuration #1 chosen from 1 choice
[ 35.088000] hub 1-0:1.0: USB hub found
[ 35.092000] hub 1-0:1.0: 1 port detected
[ 35.312000] SCSI subsystem initialized
[ 35.444000] usb 1-1: new high speed USB device using ath-ehci and address 2
[ 35.592000] usb 1-1: configuration #1 chosen from 1 choice
[ 35.596000] hub 1-1:1.0: USB hub found
[ 35.600000] hub 1-1:1.0: 4 ports detected
[ 35.660000] Initializing USB Mass Storage driver...
[ 35.664000] usbcore: registered new interface driver usb-storage
[ 35.672000] USB Mass Storage support registered.
[ 37.408000] kcg 333 :GPL NetUSB up!
[ 37.644000] kc 90 : run_telnetDBGDServer start
[ 37.652000] kc 227 : init_DebugD end
[ 37.652000] INFO17ED: NetUSB 1.02.66, 0002061F : Apr 22 2015 18:23:53
[ 37.660000] INFO17EF: 7437: TL-WDR3600 v1 :TL-WDR3600 v1
[ 37.668000] INFO17F0: AUTH ISOC
[ 37.668000] INFO17F1: filterAudio
[ 37.672000] usbcore: registered new interface driver KC NetUSB General Driver
[ 37.684000] INFO0145: init proc : PAGE_SIZE 4096
[ 37.688000] INFO16E1: infomap 8658bf00
[ 37.692000] INFO16E4: sleep to wait br0 to wake up
[ 37.696000] INFO15B4: tcpConnector() started... : br0
[ 37.712000] TP_RULE_NAT:enable hardware nat
[ 37.764000] IPv6 over IPv4 tunneling driver
[ 40.276000] (tp_mroute_enable_write)173, tp_mroute_enable = 1
[ 40.300000] br0: port 2(ath0) entering disabled state
[ 40.400000] br0: port 3(ath1) entering disabled state
[ 40.728000] INFO1567: Bind to br0
check successAñadir que al principio del proceso me sucedió una pequeña jodienda..... en un momento dado del proceso aparecía algo similar a esto:
"Loading: T T T T (...) Retry count exceeded". La solución la pude encontrar en un comentario que un usuario habia dejado debajo de este video de youtube:
worked great many thanks ! this saved my router 
the additional step I had to add in my case was to manually change the NIC duplex settings from auto negotiation to 100 Full Duplex. I came upon this solution because when Uboot tried loading the image file I would get a "Loading: T T T T T T T T T T (...) Retry count exceeded; starting again" error. after making the changes to my NIC it worked great.
Es decir que si os sucede esto la solución es cambiar manualmente la configuración del hardware de la ethernet, de Autonegotiation a 100 Full Duplex.
En mi caso que uso un Macbook Pro (MacOS 10.13.1) como me ha funcionado es dejando el hardware ethernet configurado asi:
Os dejo también por aqui los programas que he usado en el Macbook por si os pueden ser utiles.
-Serial 1.3.2 (
https://www.decisivetactics.com) 7MB
https://www.mediafire.com/file/el5uqwblmp5y5b7/srl132.zip-TFTP Server v. 3.5.1 (
http://ww2.unime.it/flr/tftpserver/) 319K
https://www.mediafire.com/file/83oc0bcdxqq9cw4/TftpServer.dmgEspero que todo este ladrillo pueda ser util a alguien.
Gracias compañeros. Un saludo
