These are optimized versions of the original firmware with bloatware removed and SuperSU or Magisk pre-installed. This is the most stable option for those who want a faster experience without losing cellular functionality. AOSP/CM Ports:
: This is the most difficult step, as Huawei officially stopped providing unlock codes in 2018. You may need third-party tools or "brute-force" methods mentioned in guides on HardReset.info . Huawei T1-701u Custom Rom
How to install a different operating system on an Android Phone - iFixit These are optimized versions of the original firmware