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Zyxel 325v2

Posted by Marcel P. 
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Marcel P.
Zyxel 325v2
September 07, 2025 11:17AM
Hello, I'm currently trying to reinstall my Zyxel 325v2 with Debian and am following these instructions: https://forum.doozan.com/read.php?3,12381 Unfortunately, I don't have flash_erase /dev/mtd0 0 4, only flash_eraseall, and that probably wouldn't work. I can't reinstall it either because my kernel is too old. What can I do?
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bodhi
Re: Zyxel 325v2
September 07, 2025 01:57PM
Marcel P,

I mentioned this in the u-boot installation instruction, you've probably missed it:

Quote

A. Flashing Instruction:

......


If you are running kernel that do not provide mtd-utils and uboot-tools (fw_setenv, fw_printenv, flash_erase, nandwrite), you can download the NAND and U-Boot tools binaries here in this thread.
https://forum.doozan.com/read.php?3,27280

Quote

While in stock OS, you can download the following binpack so that the normal tools for use in nand installation will be available in the system. Since Dropbox use https, you can download it to an USB stick on another Linux box and copy this tarball to the stock OS (I'll upload this to my available storage here so stock wget can be used, when I can).

Dowload at Dropbox
linux-tools-installation-bodhi.tar.gz
md5:
e58f442411eb35e641d40ea0577e00ff linux-tools-installation-bodhi.tar.gz
sha256:
88dfa8eadb319e2e286320643a654bf89bff0b0d450562fce09938e7f3b0007d linux-tools-installation-bodhi.tar.gz
Date: May 18 00:31 PST

This binpack contains these files:
tools/
tools/busybox
tools/e2fsck
tools/nanddump
tools/fw_printenv
tools/flash_erase
tools/nandwrite
tools/fw_env.config

-bodhi
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Sash
Re: Zyxel 325v2
November 28, 2025 07:24AM
another option is: get yourself a serial ttl level converter (just a few bucks) and 3 jumper cables and flash via serial console. this is quiet easy and here well documented.
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