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Cudy LT500

The Cudy LT500 is a Cat41) LTE modem and AC12002) wifi router/repeater. There is relatively little documentation so this page attempts to collect what there is.


The LT's software is a modified OpenWRT or LEDE stack:

Fri May 20 21:41:05 2022 kern.notice kernel: [ 0.000000] Linux version 4.4.140 (jenkins@cudy_release) (gcc version 5.4.0 (LEDE GCC 5.4.0 1.3.5) ) #0 Thu Mar 17 11:30:29 2022

power supply

The router is powered by 12vdc, 1A adapter, so should be easy to run off house power.

the LT family

Model RAM/flash wifi LTE chips
LT500 (black)128MB/16MB802.11ac/a/n/b/g 2.4/5GHzLTE-FDD:B2/B4/B5/B12/B13/B14/B66/B71
LTE: Qualcomm EC25-AFX chip3)
Wifi: Mediatek T7628-series4)
LT450 (white)128MB/16MB802.11ac/a/n/b/g 2.4/5GHzLTE-FDD:B2/B4/B5/B12/B13/B14/B66/B71
WiFi: MT7628A+MT7612E5)
LT400 (black)6)64MB/8MB802.11n/b/g 2.4 GHzLTE-FDD:B2/B4/B5/B12/B13/B14/B66/B71
LTE: Qualcomm Chipset
Wifi: MTK Chipset7)
LT350 (white)64MG/8MB802.11n 2.4GHzLTE-FDD: B2/B4/B5/B12/B13/B14/B66/ B71
not listed8)

It is not immediately clear what the difference is between 450 and 500 besides color. When checked, firmwware v.1.3.6 for both was byte-for-byte identical and refers to Mediatek MT7628 chip:

  md5sum *.bin
  2f4ce9b89723dfa91bd44f6291ee1d60  LT450-R9-1.13.6-20220317-193822-flash.bin
  2f4ce9b89723dfa91bd44f6291ee1d60  LT500-R9-1.13.6-20220317-193822-flash.bin

hardware version

Under Advanced Settings | Firmware it shows HW version at the bottom of the dialog.

official docs

undocumented features

Smart Connect allows separate 2.4/6GHz configurations but presents a single SSID.

Behind the scenes, the router automatically determines whether to connect a device to the 2.4 or 5 GHz band, thereby providing the best speed and range for each device and optimally distributing devices to each network.9)

TR069 appears to refer to this device management spec.

Remote Web seems to be a web proxy setting (untested).

AT commands can be entered at this link.10)

further reading

opinion/frater_secessus/cudy_lt500.txt · Last modified: 2022/07/25 12:13 by frater_secessus