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---
title: Carlito Firmware for Huawei MA5671A
has_children: false
parent: Huawei MA5671A
layout: default
---
# General Settings and Useful Commands
{% include alert.html content="Be careful, back up the goi_config from uboot before changing firmware." alert="Info" icon="svg-info" color="blue" %}
## Setting image version
```sh
fw_setenv image0_version V1.7.6-170626
fw_setenv image1_version V1.7.6-170626
```
## Setting S/N
```sh
fw_setenv ont_serial ABCD12345678
```
or
```sh
uci set gpon.ploam.nSerial="0x48 0x57 0x54 0x43 0x9D 0xAC 0xC7 0xA3"
uci commit
```
## Setting PLOAM Password
```sh
fw_setenv nPassword "0x30 0x31 0x32 0x33 0x34 0x35 0x36 0x37 0x38 0x39"
```
or
```sh
uci set gpon.ploam.nPassword="0x30 0x31 0x32 0x33 0x34 0x35 0x36 0x37 0x38 0x39"
uci commit
```
## Setting LOID and Checkcode Password
```sh
fw_setenv omci_loid 1234567890
fw_setenv omci_lpwd password01
```
If LOID is disabled in the firmware try alternative software.
## Setting and checking oem-generic
```sh
fw_setenv target oem-generic
fw_printenv target=oem-generic
```
## Getting/Setting Speed LAN Mode
To enable the 2.5 Gbps / HSGMII with auto-neg on:
```sh
fw_setenv sgmii_mode 5
```
To remove the value (back to default):
```sh
fw_setenv sgmii_mode
```
To get the LAN Mode:
```sh
onu lanpsg 0
```
The `link_status` variable tells the current speed
| Value (for `sgmii_mode` and `link_status`) | Speed |
| ------------------------------------------ | ---------------------------------- |
| 3 | 1 Gbps / SGMII with auto-neg on |
| 4 | 1 Gbps / SGMII with auto-neg off |
| 5 | 2.5 Gbps / HSGMII with auto-neg on |
## Querying a particular OMCI ME
```sh
omci_pipe.sh meg MIB_IDX ME_IN
```
Where `MIB_IDX` is the MIB ID and the `ME_IN` is the ME instance number
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