飞行+穿越机：给BetaFPV ELRS nano 接收机刷固件时显示”not enough data uploaded“的...
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给BetaFPV ELRS Nano 接收机刷固件时遇到以下问题：（下图为参考图，非自己的截图）
当时的接收机固件是2.5.0，我想刷回1.2.0，上传固件后出现了类似于上图中的问题，主要是“not enough data uploaded ”
解决办法：
我在Facebook上找到了一个回答，简单说就是2.5固件的小“bug”，它不希望你刷错固件，先给你提示，如果强制刷，就会显示“not enough data uploaded ”。（原链接：https://www.facebook.com/groups/636441730280366/posts/988327701758432/?comment_id=989019461689256）
所以可以将2.5.0的固件先刷到2.0.0，再刷到1.2.0。
Success! Got the answer from ”CapnBry” himself: there is a bug in 2.5 that prevents changing target, so reverting the ep2 to 2.0 (original target), I then could flash the DIY 2400 PWM 2.0 and then update it to DIY 2400 Pwm 2.5. And I just got the tiniest 2ch pwm rx ever 来自：https://www.facebook.com/groups/636441730280366/posts/988327701758432/?comment_id=989019461689256
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