I Tftp Upgrade Firmware Version 1255 Download New May 2026

Set your computer’s IP address to a static address in the same subnet as the device’s bootloader. Common defaults:

After a successful download, do not reboot yet. Write the image:

erase 0x9f020000 +0x1000000
cp.b 0x80000000 0x9f020000 0x1000000

Or for simpler devices:

bootm 0x80000000

If the device has a dedicated flash command: i tftp upgrade firmware version 1255 download new

flash image 0x80000000 version_1255

Set your PC’s Ethernet interface to a static IP (e.g., 192.168.1.10 / subnet 255.255.255.0). No gateway needed.

Launch your TFTP server:

device> tftp -g -l firmware_1255.bin -r firmware_1255.bin 192.168.1.100
firmware_1255.bin  100% |*******************************|  4096 KB  00:00:02
device> upgrade flash0 firmware_1255.bin
Erasing flash... done.
Writing... done.
Verifying... checksum OK.
device> reboot
...
device> show version
Version: 1255 (Release date: 2026-04-01)

| Error Message | Likely Cause | Solution | |---------------|--------------|----------| | TFTP: Access violation | TFTP server cannot read the file. | Move version_1255.bin to the server’s root directory and set file permissions (read for everyone). | | TFTP: File not found | Filename mismatch. | Ensure exact spelling (case-sensitive on Linux). Check if file name has a .img extension. | | TFTP: Timeout | Firewall or wrong IP. | Disable Windows firewall, check Ethernet cable, ensure PC IP is static and reachable. | | Bad Magic Number | Wrong firmware file for this device. | Download the correct version 1255 for your exact hardware revision. | | Flash write failed | Flash chip protection or bad block. | Try erasing the flash region first. Use protect off all in U-Boot. | Set your computer’s IP address to a static

Ensure the file name matches what the device expects (often case-sensitive).

After verification, reboot:

reload

or click Reboot in the web UI.

If the official website no longer hosts version 1255 (vendors often prune old releases), try:

Never flash an image from an unrelated device brand or model, even if the version number matches.