[Droid Incredible Q&A, Help & Troubleshooting] manhatton:
Just attempted that and may have found the problem, although I have no clue what it means. On my way to flashing the HBOOT here's where it failed:

c:\Android>fastboot oem rebootRUU

...

(bootloader) msm_nand_erase: failed, block 4091, status 0xC001A0

(bootloader) [ERR] Bad block found: 4091

(bootloader) msm_nand_dm_write_oob 0x1FF60000 2048 0 failed (-5)

(bootloader) msm_nand_dm_write_oob 0x1FF60800 2048 0 failed (-5)

(bootloader) Mark bad block 4091 failed (-5)

(bootloader) msm_nand_erase: failed, block 4092, status 0xC001A0

(bootloader) [ERR] Bad block found: 4092

(bootloader) msm_nand_dm_write_oob 0x1FF80000 2048 0 failed (-5)

(bootloader) msm_nand_dm_write_oob 0x1FF80800 2048 0 failed (-5)

(bootloader) Mark bad block 4092 failed (-5)

(bootloader) msm_nand_erase: failed, block 4093, status 0xC001A0

(bootloader) [ERR] Bad block found: 4093

(bootloader) msm_nand_dm_write_oob 0x1FFA0000 2048 0 failed (-5)

(bootloader) msm_nand_dm_write_oob 0x1FFA0800 2048 0 failed (-5)

(bootloader) Mark bad block 4093 failed (-5)

(bootloader) msm_nand_erase: failed, block 4094, status 0xC001A0

(bootloader) [ERR] Bad block found: 4094

(bootloader) msm_nand_dm_write_oob 0x1FFC0000 2048 0 failed (-5)

(bootloader) msm_nand_dm_write_oob 0x1FFC0800 2048 0 failed (-5)

(bootloader) Mark bad block 4094 failed (-5)

(bootloader) msm_nand_erase: failed, block 4095, status 0xC001A0

(bootloader) [ERR] Bad block found: 4095

(bootloader) msm_nand_dm_write_oob 0x1FFE0000 2048 0 failed (-5)

(bootloader) msm_nand_dm_write_oob 0x1FFE0800 2048 0 failed (-5)

(bootloader) Mark bad block 4095 failed (-5)

(bootloader) msm_nand_dm_write_oob 0x1FF60000 2048 0 failed (-5)

(bootloader) [ERR] flash_write_page failed(errno 261824): page id 131072

(bootloader) [ERR] <Error>partition_write::Failed to write page 261824

(bootloader) [ERR] <Error>Roll back data and mark bad block

(bootloader) Mark Bad block: 4091

(bootloader) msm_nand_dm_write_oob 0x1FF60000 2048 0 failed (-5)

(bootloader) msm_nand_dm_write_oob 0x1FF60800 2048 0 failed (-5)

(bootloader) Mark bad block 4091 failed (-5)

(bootloader) msm_nand_dm_write_oob 0x1FF80000 2048 0 failed (-5)

(bootloader) [ERR] flash_write_page failed(errno 261888): page id 131072

(bootloader) [ERR] <Error>partition_write::Failed to write page 261888

(bootloader) [ERR] <Error>Roll back data and mark bad block

(bootloader) Mark Bad block: 4092

(bootloader) msm_nand_dm_write_oob 0x1FF80000 2048 0 failed (-5)

(bootloader) msm_nand_dm_write_oob 0x1FF80800 2048 0 failed (-5)

(bootloader) Mark bad block 4092 failed (-5)

(bootloader) msm_nand_dm_write_oob 0x1FFA0000 2048 0 failed (-5)

(bootloader) [ERR] flash_write_page failed(errno 261952): page id 131072

(bootloader) [ERR] <Error>partition_write::Failed to write page 261952

(bootloader) [ERR] <Error>Roll back data and mark bad block

(bootloader) Mark Bad block: 4093

(bootloader) msm_nand_dm_write_oob 0x1FFA0000 2048 0 failed (-5)

(bootloader) msm_nand_dm_write_oob 0x1FFA0800 2048 0 failed (-5)

(bootloader) Mark bad block 4093 failed (-5)

(bootloader) msm_nand_dm_write_oob 0x1FFC0000 2048 0 failed (-5)

(bootloader) [ERR] flash_write_page failed(errno 262016): page id 131072

(bootloader) [ERR] <Error>partition_write::Failed to write page 262016

(bootloader) [ERR] <Error>Roll back data and mark bad block

(bootloader) Mark Bad block: 4094

(bootloader) msm_nand_dm_write_oob 0x1FFC0000 2048 0 failed (-5)

(bootloader) msm_nand_dm_write_oob 0x1FFC0800 2048 0 failed (-5)

(bootloader) Mark bad block 4094 failed (-5)

(bootloader) msm_nand_dm_write_oob 0x1FFE0000 2048 0 failed (-5)

(bootloader) [ERR] flash_write_page failed(errno 262080): page id 131072

(bootloader) [ERR] <Error>partition_write::Failed to write page 262080

(bootloader) [ERR] <Error>Roll back data and mark bad block

(bootloader) Mark Bad block: 4095

(bootloader) msm_nand_dm_write_oob 0x1FFE0000 2048 0 failed (-5)

(bootloader) msm_nand_dm_write_oob 0x1FFE0800 2048 0 failed (-5)

(bootloader) Mark bad block 4095 failed (-5)

(bootloader) [ERR] <Error>partition_write::Too many bad blocks(out of ran

(bootloader) ge)

OKAY [ 0.275s]

finished. total time: 0.277s

After that it shutoff. Any clue what this indicates?