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authorSimone Bortolin <simonebortolin@users.noreply.github.com>2022-12-19 23:07:42 +0100
committerSimone Bortolin <simonebortolin@users.noreply.github.com>2022-12-19 23:07:42 +0100
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+---
+title: Zyxel PMG3000-D20B
+has_children: false
+alias: Ziza OP151S, T&W TW2362H-CDEL
+layout: default
+---
+
+# Hardware Specifications
+
+| | |
+| ----------- | ----------------------------------------------- |
+| Vendor | Zyxel |
+| Model | PMG3000-D20B |
+| Chipset | Lantiq PEB98035 |
+| Flash | 8 MB |
+| RAM | 64 MB |
+| System | OpenWRT |
+| HSGMII | Yes |
+| Optics | SC/APC |
+| IP address | 10.10.1.1 |
+| Web Gui | ✅ username `admin`, password `admin` or `1234` |
+| SSH | ✅ username `admin`, password `admin` or `1234` |
+| Form Factor | miniONT SFP |
+
+{% include image.html file="pmg3000-d20b.png" alt="PMG3000-D20B" caption="PMG3000-D20B" %}
+{% include image.html file="op151s.png" alt="Ziza OP151S" caption="Ziza OP151S" %}
+
+Once you access the stick via ssh you will be presented with a second tier login. The credentials to access the zyxel shell are: username: `twmanu` , password: `twmanu`.
+From the zyxel shell you can move to a standard linux shell via the `linuxshell` command
+
+## Firmware is interchangeable with:
+
+- [Zyxel PMG3000-D20B](ont-Zyxel-PMG3000-D20B)
+- [Halny HL-GSFP](ont-Halny-HL-GSFP)
+- [D-LINK DPN-100-Rev-A2](ont-D-LINK-DPN-100-Rev-A2)
+- [Ziza OP151s](ont-ziza-op151s)
+- [T&W TW2362H-CDEL](ont-T-W-TW2362H-CDEL)
+
+# List of software versions
+
+# List of partitions
+
+| dev | size | erasesize | name |
+| ---- | -------- | --------- | -------------- |
+| mtd0 | 00060000 | 00010000 | "Boot" |
+| mtd1 | 00010000 | 00010000 | "Env" |
+| mtd2 | 00390000 | 00010000 | "ImageA" |
+| mtd3 | 00390000 | 00010000 | "ImageB" |
+| mtd4 | 00060000 | 00010000 | "Config" |
+| mtd5 | 00010000 | 00010000 | "SECTION_EGIS" |
+| mtd6 | 00250000 | 00010000 | "rootfs" |
+| mtd7 | 00020000 | 00010000 | "rootfs_data" |
+
+
+This stick supports dual boot, as visible from the presence of `ImageA` and `ImageB`, which contain the rootfs.
+
+
+# List of firmwares and files
+## Useful files
+- `/var/config/ont.sys` used to customize various settings on the stick. If you don't have it you can copy the stock one from /ont.sys
+
+# Useful Commands
+*Note: all commands start from the twmanu shell*
+
+## Changing the ONT's S/N
+*Note the S/N is stored in the ASCII format*
+```sh
+manufactory
+set sn ALCLf0f0f0f0
+exit
+hal
+set sn ALCLf0f0f0f0
+```
+
+## Changing the ONT's PLOAM password
+*Note: the PLOAM is stored in the ASCII format*
+This can be done easily via web ui. If you prefer to do it via the shell use:
+```sh
+manufactory
+set password PLOAMPASS
+```
+
+## Changing the ONT's equipment ID
+*Note: model number must be 20 no more than chars total*
+```sh
+manufactory
+set equipment id MYEQUIPMENTID
+exit
+omci
+equipment id MYEQUIPMENTID
+```
+
+## Changing the ONT's hardware version
+```sh
+manufactory
+set hardware version 3FE49165BFAA01
+```
+
+## Changing the software version
+Edit the /var/config/ont.sys via vi directly on the stick itself. The file is CRLF terminated, one entry per line.
+The entries for the software version are:
+```
+SW_VER0:0xabcdef
+SW_VER1:0xabcedf
+```
+*Note: it's better to enter the software version in hex format, all lowercase precedeed by 0x.*
+
+## Querying a particular OMCI ME
+Query via OMCI ME Class Name
+```sh
+omci
+show me classname OmciClassName (e.g Ont2g)
+```
+
+Query via OMCI ME ID
+```sh
+omci
+show me classid OmciClassId (e.g 7)
+```
+
+
+# Low Level Modding
+
+## Creating a new rootfs
+The stick has a tricky image packing method, fortunately it has been reverse engineered. A script to help you create a custom rootfs can be found here: [https://github.com/nanomad/zyxel-pmg-3000-mod-kit](https://github.com/nanomad/zyxel-pmg-3000-mod-kit)
+
+## Flashing a new rootfs
+*Note: all commands start from the twmanu shell*
+
+- Transfer the new mtd on the stick via tftp
+```
+linuxshell
+tftp -gr mtd2.mod.bin TFTP_SERVER_IP
+```
+- Flash it on the standby partition.
+You can use `system` and then `show actimage` to get the current active image. Check `/proc/mtd` for the right mtds. Usually:
+- if the currect active image is A the mtd in use is mtd2
+- If the current active image is B the mtd in use is mtd3
+```
+linuxshell
+mtd -e /dev/mtd2 write /tmp/mtd2.mod.bin /dev/mtd2
+```
+- Switch to the new image
+```
+system
+set actimage a
+```
+- Reboot the ONT
+```
+system
+reboot
+```
+
+# Known Bugs
+- [Not working with Broadcom BCM57810S](https://github.com/xvzf/zyxel-gpon-sfp/issues/10)
+
+# Miscellaneous Links
+
+- [zyxel gpon- sfp](https://github.com/xvzf/zyxel-gpon-sfp)
+- [zyxel pmg-3000 mod kit](https://github.com/nanomad/zyxel-pmg-3000-mod-kit)