TL-WR840N V5 Cant save OpenWrt Setting

cant ! but as i see the tuturial , it flash successfull

but dont the factory verion !

only can back in openwrt version!


i can back in openwrt
but cant back in factory tplink rom !!

Then you should work on showing us - you can.

Then that means it was unsuccessful.

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this is the tftp messeges

ican return to openwrt but i cant return to factory rom , blinking green light

How is an 8126464 byte file going to fit in a 4 megabyte flash chip?

Clearly you're using the wrong file.

If the TFTP recovery routine in the bootloader doesn't recognize the file, it doesn't flash anything and continues to boot normally.

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i download the file from tp link site !!

that file is ok , return to openwrt

but the orginal frimware after flashing , blink green light

UPLOADING ORGINAL FILE

OK looks like the file was sent twice, and strangely this client reports the total of both.

Did you remove the first 512 bytes per the instructions @lleachii linked?

Since dd does not exist on Windows it is possible to use a hex editor instead.

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no , how i must to remove first 512 byte ?

https://openwrt.org/toh/tp-link/tl-wr840n#return_to_official_tp-link_firmware
this link is for V4 , i need V5 link

You recall I noted that you must follow the instructions exactly.

You remove the first 512 bytes as noted in the instructions. If you do not have access to a Linux machine, you must find a Hex editor and manually cut it out.

The link I sent on OpenWrt goes to all versions, including V5.

are you using tftp recovery

or

ssh cli using dd etc

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i dont acces to linux !
what i must to do ?


use tftp

"Use a hex editor to remove the first 512 bytes of the file" should be self-explanatory with a little Google.

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LOL...PLEASE READ:

Please stop skipping steps!

ok i download some hex editor
how to edit router with hex editor ?

You remove the first 512 bytes of the file you wish to flash (the OEM firmware)!

You don't "edit the router."

the orginal frimware right ?

yes i seeing it
but i down know how to remove the 512 byte of the bin file

Google it.

You've been told 4 times that you must use a Hex editor with Windows. Now you must install that Hex editor and learn how to cut out the first 512 bytes.

Most work like a text editor or word processor.

You then can flash it back to OEM. Simple.

i cant do it :frowning:
i dont know linux !
i dont know hex editor !
can you pplease please please remove 512 byte and upload for me ? :frowning:

If you're keen to use dd and don't mind using linux you can install ubuntu on windows 10

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