Problem while reverting to original firmware TpLink mr6400 v1

I encountered an issue when reverting to the original firmware. I followed the instructions provided here. However, after cutting, the file size is still over 50MB, which exceeds the temporary memory of the device, making it impossible to revert.
Could you assist me in accurately cutting the firmware or provide more detailed guidance? Thank you to everyone.

After unpacking the zip file, use an archiver to open the mr6400v1_up_boot_*.bin file as well and extract only the router.bin file available inside.

The original size of router.bin should be 8258048 bytes. Make sure that after cutting out the first 131584 bytes using the suggested command, the size of output file is exactly 8126464 bytes.

root@OpenWrt:/tmp# tail -c+131585 router.bin > mr6400_tp_recovery.bin
root@OpenWrt:/tmp# ll mr6400_tp_recovery.bin
-rw-r--r--    1 root     root       8126464 May 11 09:53 mr6400_tp_recovery.bin
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Issue solved. Very thank you!!!

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