Thereafter, i decided to send my 5x to China for CPU fixing, as the RAM is packed with the CPU together, the guy suggested me upgrading it to 3 or 4 GB RAM. That's how the 4GB RAM 5X comes out.
I've tested the OTA works fine from 6.0.1 to 7.1.1, all functions works fine too.
How does it work? #106
Since i posted this post, i learnt something about the CPU from 5x, and how can it be upgraded, let me explain to you guys first.
The packaging technique of 5x is using PoP, or package on package, which the processor package has pads on the top for the RAM chip and BGA on the bottom to attach to the PCB, its saves board space at the expense of assembly cost. This simply means the RAM sits on top of the SoC.
As fixing this bootloop issue, you have to remove the whole SoC+RAM block, so why not upgrade the RAM chip together?
Just talked to the dude on WeChat, he confirmed RMB400 for CPU reflow and 4GB RAM upgrade.
I also made sense of his address in somewhat of an international format:
Mr. Huang Jinhui
Yuanwang Digital Mall, 1st floor 1065
HuaQiang North Road
Shenzhen, Futian District, HuaQiang North
People's Republic of China
WeChat ID: 784439978
Phone number: 15919836083
I will ship my other N5X first thing on Monday with the Romanian National Post Service. I will keep you updated, as soon as is gets to China. In like 2 weeks.