Solved - ZTE MF286D - Wrong Image Format for bootm command

Trying to re-install OpenWRT via tftp and can't get the initramfs kernel to boot.
I downloaded the initramfs itb from here:
https://downloads.openwrt.org/releases/22.03.5/targets/ipq40xx/generic/openwrt-22.03.5-ipq40xx-generic-zte_mf286d-initramfs-fit-zImage.itb

Then renamed the file by removing "22.03.05" so that it matched the install instructions for copy / paste into putty but for some reason the file is not recognised by bootm:

(IPQ40xx) # setenv serverip 192.168.1.3
(IPQ40xx) # setenv ipaddr 192.168.1.72
(IPQ40xx) # set fdt_high 0x85000000
(IPQ40xx) # tftp openwrt-ipq40xx-generic-zte_mf286d-initramfs-fit-zImage.itb
MAC0 addr:0:3:7f:ba:db:ad
PHY ID1: 0x4d
PHY ID2: 0xd0b1
ipq40xx_ess_sw_init done
eth0
eth0 PHY0 Down Speed :10 Half duplex
eth0 PHY1 Down Speed :10 Half duplex
eth0 PHY2 Down Speed :10 Half duplex
eth0 PHY3 Down Speed :10 Half duplex
eth0 PHY4 Down Speed :10 Half duplex
(IPQ40xx) # bootm $loadaddr
Wrong Image Format for bootm command
ERROR: can't get kernel image!

Is it simply that the tftp is not working?
Any thoughts gratefully accepted!

did you remove some of the console output ?
there's usually more data shown during the transfer of the image.

can you see the image being pulled, on your TFTP host ?

No, nothing removed from the console output, I did wonder if there should be more info on the amount of data being downloaded. I'll investigate the tftp side a bit more.

most common reason for TFTP transfers failing, is the firewall on the host side.

Is this the correct IP for the TFTP host?

Yes, 192.168.1.3 is the address on the host interface.
The host is running Linux, not had any problems before today which is why I'm a bit puzzled.

OK, it's working again.

I'm not really sure what happened, but I changed the ethernet cable and also erased the existing OS via

nand erase 0x1800000 0x1d00000

After that the TFTP worked without a problem and then sysupgrade to get OpenWRT working again.

Here's what the TFTP should have looked like

(IPQ40xx) # tftp openwrt.itb
eth0 PHY0 Down Speed :10 Half duplex
eth0 PHY1 Down Speed :10 Half duplex
eth0 PHY2 Down Speed :10 Half duplex
eth0 PHY3 up Speed :1000 Full duplex
eth0 PHY4 Down Speed :10 Half duplex
Using eth0 device
TFTP from server 192.168.1.3; our IP address is 192.168.1.72
Filename 'openwrt.itb'.
Load address: 0x84000000
Loading: #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         ############################################################
done
Bytes transferred = 6597052 (64a9bc hex)



Thanks to all that replied.