A hack would be nice to remove (hide) unnecessary menu items from the display of band. For example remove the Alipay, Mijia and Weather icons - they are fully unnecessary.
As I saw it makes the automatic update for resources only if you are connected to Wifi. If not, it asks you if you want to download it. And there you can click Cancel.
You can flash it after enlish custom 1.7.19 is released but i only say that the improvements in this version are mostly related to weather display. But this is only interesting to chinese users because we cant use weather forecast.
This must be user error. If you follow the guide it must be successful, i made it many times and with success. Read the guide again carefully and follow every point like described.