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根據芯片資料敘述,當所有的開機嘗試都失敗之後,也會進入 USB Download Mode。
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從 Log 來看,SDC2 Port (SD/MMC Card) 開機也失敗了。所以我較好奇,你到底想從什麼外部裝置開機?) n0 ~2 T/ q8 ? r5 E1 ~/ k
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ERROR! NOT find the head of uboot. => 沒燒錄軟件嗎 ?- K, Y# O- J: L: c5 |, w) |6 E
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: u$ U1 C' ~9 L2 o. g! P+ p4 w8 KFEL is a low-level subroutine containing in the BootROM on allwinner devices. It is used for provisioning and recovery of devices using USB. When the chip goes to FEL mode, the chip will be waiting for communication from PC though USB.
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