It seems I've finally found a method.
I can't share how, but I'd like to share some tips.
I'll come back with proof if it lasts more than a week or runs out of $350.
It's not yet a good time to share information with anyone.
please do not PM
The current situation is as follows.
1. The US also works. (I haven't used the 350$ yet)
2. No warm-up required. (at least me)
3. I think VCC is the most important.
4. Other countries have not tried.
(When US starts giving $50, other countries will try)
I will have to continue researching in the future, but I am satisfied with the progress little by little.
Coming soon with good news!