Fixes
- Decode numeric XML character references in Huawei HiLink SMS, so encoded slashes such as
/display correctly. - Handle decimal and hexadecimal Unicode references without decoding escaped text twice.
Validation
- Added regression coverage for the E5573Bs-320 SMS response supplied by a user.
This fixes SMS text decoding; router login and the original E5573 issue still require confirmation on the device. TD Tech MT5700M-CN startup delays and high CPU usage remain under investigation.