Beta firmware fix LT18, LT450, LT500, LT500D and T-Mobile configuration issue

Cudy Home    Support页面    FAQ    Beta firmware fix LT18, LT450, LT500, LT500D and T-Mobile configuration issue

Recently, we received feedback that our router cannot work properly with the T-Mobile, like no internet or can only get IPv6 internet, etc. We created a beta firmware to fix and improve the performance.


Step 1: Open a web browser and go to or Use "admin" as the password to log in.


For details, please refer to How to log into the web interface of Cudy Router?


Step 2: Go to Advanced Settings->Firmware to upgrade the beta firmware below.




LT18 Firmware: LT18-R20-1.15.6beta-20221122-101130-flash.bin


LT450 Firmware

V1 (Micro SIM card): LT450-R9-1.15.5beta-20221121-180014-flash.bin

V2 (Nano SIM card): LT450V2-R25-1.15.5beta-20221121-183550-flash.bin


LT500 Firmware

V1 (Micro SIM card): LT500-R9-1.15.5beta-20221121-180014-flash.bin

V2 (Nano SIM card): LT500V2-R25-1.15.5beta-20221121-183550-flash.bin


LT500D Firmware

V2 (Nano SIM card): LT500DV2-R25-1.15.5beta-20221121-183550-flash.bin


Step 3: Advanced Settings-> IPv6 to enable IPv6, Save & Apply.




Step 4: Go to Advanced Settings -> TTL -> Custom and set TTL to 65, HL to 65.




Step 5: Go to General Settings->4G/Cellular.

1. Set Network mode as 4G only

2. Set APN profile as Manual

3. Set APN as (Note: for static IP plan, set APN as b2b.static)

4. Leave username and password blank

5. PDP Type choose IPv4/IPv6 or IPv4

6. Set Authentication as PAP+CHAP


Note: For the APN, you will need to double confirm since they may change without notice.




Step 6: Save & Apply, wait about 5 minutes, then check the connection. If it still doesn't work, please contact with the Diagnosis bin file. (Diagnostic Tools->Diagnosis->GO->Download)

2022-11-22 18:19
Browsing amount:0

Is this faq useful?