I have already covered the unlocking of Huawei E5377 and E5330 PTCL Pakistani 4G LTE MiFi hotspot router. But, with new devices this trick does not work any more. PTCL has put customized webUI and the device does not prompt for entering unlock code.
I tried to unlock it using Huawei HiLink (Mobile WiFi) tool, since the Huawei HiLink (Mobile WiFi) software is created by Huawei itself for managing the devices through smartphones, but no luck with E5377u-872. Hilink Huawei modems are built of HiSilicon chip and it works on RNDIS technology, which does not requires any drivers installation, and so it does not create COM port in PC, when you connect it to PC with USB cable.
How to Unlock Customized Huawei E5377u-872 PTCL Pakistani 4G MiFi Router ?
1. First download all three freewares which is mention above (Huawei HiSilicon Firmware Writer, DC unlocker and Huawei Hilink drivers).
2. Now, run Huawei HiSilicon Firmware Writer and detect the Huawei E5377u-872.
3. In this process, one COM port will be enabled and will be marked as yellow color. Now, download hilink drivers and update it.
6. Issue the following command :
Note : Replace UNLOCK CODE with your code corresponding to the IMEI.
If you get OK in the screen, then start dancing around the room. It is unlocked forever.
Above mentioned tricks can be used with all Huawei devices which does not have any COM ports and does not ask you for unlock code / NCK.
Unlock code is not free, you have to pay 6 USD. Interested then pay 6 USD in paypal id firstname.lastname@example.org and mention model with IMEI in transaction.
A big thanks to Ali Adnan Khan and Muhammad Nadeem Danish for testing and sharing the tips.