[HTC Desire S] Jann F:
Hello, I just dug around in my device and found the command list for fastboot oem with fastboot oem h.

Maybe this will be usefull for some purposes?

there is an option to get checksums without recovery etc ;)

...
(bootloader) command list
(bootloader) mb
(bootloader) mh
(bootloader) mw
(bootloader) ew
(bootloader) eh
(bootloader) eb
(bootloader) mmu
(bootloader) ram_test
(bootloader) jump
(bootloader) test
(bootloader) sdtest
(bootloader) eraseconfig
(bootloader) writeconfig
(bootloader) readconfig
(bootloader) writesku
(bootloader) readsku
(bootloader) rflash
(bootloader) tflash
(bootloader) block_test
(bootloader) partition_test
(bootloader) rbchk
(bootloader) erasesd
(bootloader) btrouter
(bootloader) tick
(bootloader) heaptable
(bootloader) emapi
(bootloader) emapiTest
(bootloader) emapiCountryID
(bootloader) emapiWlanMac
(bootloader) emapiSetDefCal
(bootloader) emapiReadCal
(bootloader) lr
(bootloader) imgcrc
(bootloader) resetautoimage
(bootloader) resetpreferdiag
(bootloader) resetRUUflag
(bootloader) writeserialno
(bootloader) readserialno
(bootloader) battcheck
(bootloader) enter
(bootloader) gotofastboot
(bootloader) gotohboot
(bootloader) writemid
(bootloader) usbtestmode
(bootloader) eraseWifiFlash
(bootloader) erase
(bootloader) readmbserialno
(bootloader) listpartition
(bootloader) erasebcid
(bootloader) writebcid
(bootloader) readbcid
(bootloader) fmrouter
(bootloader) fmtx
(bootloader) resetuP
(bootloader) bdaddress
(bootloader) wMfgTp
(bootloader) rMfgTp
(bootloader) emptypagecheck
(bootloader) saveprt2sd
(bootloader) savemem2sd
(bootloader) savefb2sd
(bootloader) emapiInit
(bootloader) emapiChannel
(bootloader) emapiBand
(bootloader) emapiRate
(bootloader) emapiRateset
(bootloader) emapiCountry
(bootloader) emapiTXpwr1
(bootloader) emapiPkteng_start
(bootloader) emapiPkteng_stop
(bootloader) emapiOut
(bootloader) emapiFqacurcy
(bootloader) emapiCrsuprs
(bootloader) emapiUp
(bootloader) emapiDown
(bootloader) emapiMpc
(bootloader) emapiCounters
(bootloader) emapiVersion
(bootloader) emapiEtheraddr
(bootloader) emapinRate
(bootloader) emapiSetIrqPin
(bootloader) bkflash2emmc
(bootloader) fl
(bootloader) loaddiag
(bootloader) lnb
(bootloader) init_a1026_fw
(bootloader) checkKeyCard
(bootloader) usbspeed
(bootloader) ats
(bootloader) gpiow
(bootloader) gpior
(bootloader) mddiw
(bootloader) mddir
(bootloader) clock
(bootloader) i2cr
(bootloader) i2cw
(bootloader) i2ctest
(bootloader) ulpi
(bootloader) changeCid
(bootloader) read_l2_acc_fuse
(bootloader) qupi2cr
(bootloader) qupi2cw
(bootloader) pmgpiow
(bootloader) pmgpior
(bootloader) dgtest
(bootloader) entpa2051
(bootloader) bumpclk
(bootloader) switch_ddrfeq
(bootloader) ntrigsetcal
(bootloader) ltetest
(bootloader) sdio_loopback
(bootloader) sdio_setsize
(bootloader) sdio_readblk
(bootloader) sdio_writeblk
(bootloader) sdio_readblk
(bootloader) sdio_dumpreg
(bootloader) emmc_boot
(bootloader) fdisk_emmc
(bootloader) set_partition_emmc
(bootloader) erase_emmc
(bootloader) test_emmc
(bootloader) sector_erase_emmc
(bootloader) fat_format_emmc
(bootloader) init_emmc
(bootloader) reinit_emmc
(bootloader) write_mmc
(bootloader) set_wp_emmc
(bootloader) write_prot_test
(bootloader) clear_wp_emmc
(bootloader) set_enh_area_emmc
(bootloader) get_identifier_token
(bootloader) keytest
(bootloader) heap
(bootloader) boot
(bootloader) reset
(bootloader) powerdown
(bootloader) rebootRUU
(bootloader) heap_test
(bootloader) rtask
(bootloader) task
(bootloader) enableqxdm
(bootloader) gencheckpt
(bootloader) lock
(bootloader) list_partition_emmc
(bootloader) load_emmc
(bootloader) check_emmc
(bootloader) check_emmc_mid
(bootloader) read_mmc
(bootloader) get_wp_info_emmc
(bootloader) send_wp_info_emmc
(bootloader) get_ext_csd_emmc
(bootloader) get_sector_info_emmc
OKAY [ 0.152s]
finished. total time: 0.152s

Done on my current hboot (ENG 2.00.2002)

For example use:

fastboot oem changeCid 11111111

idk if or how the process works...

EDIT:

dafuq??

sudo fastboot oem check_emmc
...
(bootloader) This eMMC is not made from Micron.MID=21.
(bootloader) eMMC should not be Micron's
OKAY [ 0.009s]
finished. total time: 0.009s

EDIT2:

Googling commands led me to this site where some commands are explained or tested

www.htcmania.com/mediawiki/index.php/Cómo_utilizar_FastBoot