如何将 Cudy 路由器从 OpenWRT 固件恢复为 Cudy 官方固件？

Hi, I want to flash my TR300-256Mb router to OpenWrt, but after using the “cudy_tr3000-256mb-v1-sysupgrade.bin” file, it doesn’t display any pages upon reboot. The red and white LEDs keep flashing. I attempted to use TFTP for recovery, but unfortunately, I can’t revert to the original firmware. The same LED signal persists.
So, What can I do?

Figured out my problem – I was using a long cellphone SIM tray removal tool, and at that angle, it was slipping off the reset button and I did not realize it.

Use my smallest allen key that I could put a lot better pressure on and with worked perfectly, on 2 different WR3000Hs.

Also, downloaded the latest version of the 64-bit tftpd and tested, and it still works perfectly fine, too.

Once I got it to work, I see also that it is very fast – took no more than maybe 2 minutes from start to fully usable Cudy interface.

Thanks!

1. Download and unzip the file from here. (File is tftpd64.exe when unzipped – I unzipped it to \tftpd in \Downloads, also tried c:\tftpd\ and e:\tftpd\)

2. Download the latest firmware from the official website and rename it to ‘recovery.bin’. Note: You must put it in the same file of Tftpd tools. (I downloaded the latest 2.4.5 firmware for WR3000H, extracted, and renamed file to recovery.bin, and placed it in the \tftpd – all three times)

3. Power off your Router. Unplug the power adapter or press the POWER button. (Unplugged router each time)

4. Connect your computer the Router’s LAN port with an Ethernet cable. (My PC has 3 NICs, 2 onboard, and 1 via PCIe. Onboard are Gigabit and 2.5 Gb, PCIe is 10 Gb. I disable 2.5 and 10, and connect 1 Gb directly to router, and I have tried the LAN ports and the WAN port.)

(Note: I run VMs, so 1 Gb and 2.5 Gb are bridged with virtual NICs for Hyper-V, could this be the issue?)

5. Configure your computer’s IP address to be ‘192.168.1.88’ manually. (Open Windows 11 settings, —> Network and Internet tab —> Advanced Network settings —> verify 2.5 and 10 Gb NICs are disabled, then for 1 Gb NIC More adapter options —> enable IP v4, then click Properties then enter IP address 192.168.1.88 and Subnet gets filled in 255.255.255.0 and then click OK.)

6. Run ‘tftp32.exe’. (I have to run tftpd64.exe, but yeah)

7. Run ‘netsh advfirewall set allprofiles state off’ in the command line to disable Windows firewall, otherwise tftp will be blocked. Or you can disable the firewall on the Control Panel of your computer. As shown below. (I tried both ways, each iteration of trial and error I tried command or I tried using Control Panel to disable both firewalls.)

8. Press the ‘Reset’ button/hole and hold it. Before the Router is powered on and before tftp start to download the firmware, don’t release the ‘Reset’ button/hole. (I press and hold the reset button)

9. Power on the Router. (I plug it in and enable power button)

10. When the Lights are all flashing fast, or when tftp start to download the firmware, you can release the ‘Reset’ button/hole. (Only power light flashes. Tftpd never starts downloading anything. If I let go of reset button while it is flashing fast, this stops after a while. If I continue to hold the reset button after a minute or so it stops flashing, goes to a slow blink, but still no download from tftpd)

11. When the light flashes slowly, the upgrade is complete. (never actually downloads file, and there is no upgrade process. Attempting to remove and connect again leaves me with no interface at all, will not generate IP for NIC, and neither is there an SSH daemon running.)

12. Please recover your computer’s IP address to be dynamic IP. (I do this after powering off after step 10)

13. Done. (Not done for me)

So, as I said, verbatim, the steps above.

@Dear John,
So what steps have you done when recover the router. Please tell me one by one in details.

“I have a WR3000H (one of three that I just bought last week using the BOGO Amazon offer) that I flashed correctly to OpenWrt, and after setting it up, disconnected from to move it to it’s final location.

Upon powering it up, nothing works, brought it back to my test bench, and nothing works. The instructions here to restore it to Cudy firmware are also not working – tftpd64 does nothing, never starts downloading the recovery.bin to the device, and during startup when connected to my PC, my NIC briefly gets an IP address of 192.168.1.1, but nothing else ever happens (noticed this phenomenon when I first brought it back to find out why it was not registering on my network).

I’ve followed the steps above explicitly (including unplugging the other NICs in the PC from active connections), but it is not working at all."

I have a WR3000H (one of three that I just bought last week using the BOGO Amazon offer) that I flashed correctly to OpenWrt, and after setting it up, disconnected from to move it to it’s final location.

Upon powering it up, nothing works, brought it back to my test bench, and nothing works. The instructions here to restore it to Cudy firmware are also not working – tftpd64 does nothing, never starts downloading the recovery.bin to the device, and during startup when connected to my PC, my NIC briefly gets an IP address of 192.168.1.1, but nothing else ever happens (noticed this phenomenon when I first brought it back to find out why it was not registering on my network).

I’ve followed the steps above explicitly (including unplugging the other NICs in the PC from active connections), but it is not working at all.