Add NAND/UBI flash backup and restore guide#59
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Comprehensive guide covering the complete workflow for backing up vendor firmware from NAND-based cameras and restoring it with proper UBI volume handling. Based on the first successful NAND+UBIFS camera recovery in OpenIPC history (hi3516av200, 128MB SPI NAND, 5 UBI volumes). Covers: - NOR vs NAND vs eMMC identification - Proper backup methods (UBIFS volumes vs raw MTD) - The bad block problem and why ubi write is needed - Complete defib restore workflow with examples - U-Boot requirements (CONFIG_CMD_UBI, malloc size) - Troubleshooting common issues - Real-world test output from hi3516av200 Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Comprehensive guide for backing up and restoring NAND-based camera firmware with proper UBI volume handling.
Based on the first successful NAND+UBIFS camera recovery in OpenIPC history — hi3516av200 with 128MB SPI NAND, 7 partitions, 5 UBI volumes, all restored and verified booting with vendor firmware.
Contents
/dev/ubiX_Y) vs raw MTD — and why it mattersdefib restoreworkflowCONFIG_CMD_UBI,CONFIG_SYS_MALLOC_LEN >= 2MB)🤖 Generated with Claude Code