Posted: Wed Mar 10, 2021 19:20 Post subject: wr941 locked on DD-WRT v3.0-r33375 std cant back on stock
My router wr941v3.6 i cant back to tp link stock fabric firmver router ok works no errors but i want he back to tp link stock without serial just with utp cable and static ip (i scare of serial to burn something i never worked with serial with succes always have brick so now i can via webui or telnet or ssh.) please help me i need good advice to webrevert him to fabrick
unfortunatly on same way like wr740v4 i bricked one wr941v3.5
i dont want and i dont wish to stay out of that router he serve me good
router what i want to get back on fabrick tplink fw is tp link wr 941 verion 3.6
firmver on him is DD-WRT v3.0-r33375 std (09/19/17
these is routers information on info tab
Code:
Router Information
System
Router Name
Router Model
TP-Link TL-WR941ND v2/v3
Firmware Version
DD-WRT v3.0-r33375 std (09/19/17)
Kernel Version
Linux 3.10.107 #40023 Tue Sep 19 02:43:38 CEST 2017 mips
MAC Address
B0:48:7A:AB:BE:CB
Hostname
WAN Domain Name
LAN Domain Name
Current Time
Not available
Uptime
27 min
CPU
CPU Model
Atheros AR9132 rev 2 (0xb9)
CPU Cores
1
CPU Features
MIPS32r1 MIPS32r2 MIPS16
CPU Clock
400 MHz
Load Average
12%
0.21, 0.09, 0.06
EDIT: If TFTP recover of factory firmware is unsuccesful (you may try oldest and newest), you should try the webrevert file for the Wr941ND v2_v3 found here:
EDIT: If TFTP recover of factory firmware is unsuccesful (you may try oldest and newest), you should try the webrevert file for the Wr941ND v2_v3 found here:
EDIT: Assume the recovery firmware (stripped factory without boot), webrevert or dd-wrt webupgrade file need renaming to wr941ndv3_tp_recovery.bin
i dont have with cuted uboot before some yeuars that was on fried zombie site now i dont have where do download
yes i now for renaming i was trying once but with no succes i will try today same with tftp.exe these ip addreses lan cable and wr941ndv3_tp_recovery.bin, and is that bin must be stock tplink or ddwrt?
Joined: 14 Oct 2016 Posts: 109 Location: United States
Posted: Sat Mar 13, 2021 4:10 Post subject:
If you are unable to do TFTP, you may have to open up the router and do serial flashing as a last resort.
Some pages to take a look that can help you. Unfortunately I never did JTAG serial on this specific kind of router but it's not terribly difficult and as long as you are okay at soldering.
The bricked firmware does not initialise the LAN ports. The TFTP client integrated into the uboot will temporary enable ONE LAN port for tftp transfer for 1-2 seconds, if uboot is intact. The LAN port on the PC need to be up at that time (or the PC will miss the link), you should cable a switch in between, so PC stays up with the manual set IP 192.168.0.66 and the TFTP server linked to this interface.
If the TFTP Server switces back to 127.0.0.1 the LAN Interface on PC is down.
You may need to check all the Ports on the router as the TFTP will probably work only on one LAN interface, other stay dead.
If you catched the correct port you should see a filename request inside the TFTP server software, if you power on the router while pressing the reset button. After power is on you need to release the reset button, this should start the TFTP emergency file request and download, if a file with the requested name exists inside the TFTP root folder. You need to enable access to the TFTP on the win filewall or disable firewall during recovery wiring.
i dont have with cuted uboot before some yeuars that was on fried zombie site now i dont have where do download
yes i now for renaming i was trying once but with no succes i will try today same with tftp.exe these ip addreses lan cable and wr941ndv3_tp_recovery.bin, and is that bin must be stock tplink or ddwrt?
The factory revert for aWr941ND v3 you should get here:
am now trying to connect wires on wr941v3 5 with ttl
TX (Transmit) connected to Rx (Receive) in both directions, Ground to Ground, nothing else. Your linked Webpage shows, that the TX PIN on the board seems unconnected, the resistor on board is missing (you don't receive anything on the USB 3.3V Serial PC Adapter). You need to add a resistor or more likely short the 2 pins. Check that the USB adapter you use has 3.3V output (check for voltage jumper on adapter), higher voltages will damage the serial on the router.
how many leds should shine red on ttl? i succes only 2 even than dont get nothing on putty com port
LED's on the router or adapter you use ?
First : Change TX - RX and try again. What USB - 3.3V Serial adapter did you attach ? did you install the chip driver ?
Second : Disable any physical onboard Com port(s) inside PC Bios. After reboot there should be only one com port visible to Win and putty if the usb adapter with it's chip driver is "online"
You may get into the Windows device settings and set the USB com Port inside windows to 115200, 8bit, 1 Stop, Parity and Flow control to None. Same on putty
Did you short the two pins from the missing resistor?
Last edited by servicetech on Sat Mar 20, 2021 16:38; edited 2 times in total
