Originally Posted by G.M.L
Did you use custom recovery?
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I think you are misunderstanding the issue. They are obviously using custom recovery instead of stock recovery because stock recovery can't flash a TWRP theme or any other kind of custom software, stock recovery can only flash stock software.
Your question implies that you think they tried using stock recovery to flash the TWRP theme and then it's gone after a reboot. This can not be the case because stock recovery wouldn't be able to flash the TWRP in the first place, much less flash it correctly.
I believe, what they are saying is, when they flash the TWRP theme, instead of the theme persisting after reboot, it is reverting back to the standard TWRP theme instead of the custom theme that they flashed.
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