[HTC One X] nitrous²:
Vcek do you already got a clue what this command is for? I hear of a guy who changed his CID temporarely. Do you know how he did that? Unfortunately I'm not very experienced in fastboot commands nor in adb. But interestingly, when I set the value for ats to 0 I get a security warning message above the "relocked" sign.

D:\fastboot>fastboot oem ats
...
(bootloader) vendor/htc/build/../hboot/common/command.c : 2167 cmd_ats
(bootloader) [MSG] ats: <value>
(bootloader) value=0 -> disable
(bootloader) value=1 -> enable
OKAY [ 0.048s]
finished. total time: 0.048s

D:\fastboot>fastboot oem ats 0
...
(bootloader) vendor/htc/build/../hboot/common/command.c : 2167 cmd_ats
(bootloader) Save data from original MSC...
(bootloader) Save data from SIF...
(bootloader) Update partition data to SIF partition
(bootloader) Update partition data from original MSC...
(bootloader) [MSG] Set usb_ats = 0
OKAY [ 0.196s]
finished. total time: 0.196s

And I hope this is helpful in some ways for us.

[QUOTE="jefffeely, post: 25277646, member: 4222519"][COLOR="DarkRed"]Warning!!!!!!!!!
Some of these commands can and will brick your phone.
Don't run them if you don't know what you are doing.
[/COLOR]
Thought these might be useful to someone:
HBOOT 2.25:
(bootloader) refurbish
(bootloader) get_identifier_token
(bootloader) checkSbl1
(bootloader) checkHWSecurity
(bootloader) checkKeycardID
(bootloader) enter
(bootloader) keytest
(bootloader) heap
(bootloader) boot
(bootloader) reset
(bootloader) powerdown
(bootloader) rebootRUU
(bootloader) heap_test
(bootloader) erase_phone_storage
(bootloader) erase_userdata
(bootloader) ats
(bootloader) rtask
(bootloader) task
(bootloader) enableqxdm
(bootloader) gencheckpt
(bootloader) readmeid
(bootloader) readpid
(bootloader) writepid
(bootloader) readcid
(bootloader) writecid
(bootloader) readimei
(bootloader) writeimei
(bootloader) readsecureflag
(bootloader) writesecureflag
(bootloader) lock
(bootloader) list_partition_emmc
(bootloader) load_emmc
(bootloader) check_emmc
(bootloader) check_emmc_mid
(bootloader) read_mmc
(bootloader) load_modem_emmc
(bootloader) get_wp_info_emmc
(bootloader) send_wp_info_emmc
(bootloader) get_ext_csd_emmc
(bootloader) get_sector_info_emmc

--------------------------------------------------------
ENG HBOOT
(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) nfcrouter
(bootloader) nfcreader
(bootloader) nfccard
(bootloader) nfcversion
(bootloader) nfcdl
(bootloader) nfctransaction
(bootloader) tick
(bootloader) heaptable
(bootloader) sysinfo
(bootloader) emapi
(bootloader) emapiTest
(bootloader) emapiCountryID
(bootloader) emapiWlanMac
(bootloader) emapiSetDefCal
(bootloader) emapiReadCal
(bootloader) emapiReadbtaddr
(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) readbdaddr
(bootloader) resetgift
(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) usblog
(bootloader) bkflash2emmc
(bootloader) fl
(bootloader) loaddiag
(bootloader) lnb
(bootloader) init_a1026_fw
(bootloader) checkKeyCard
(bootloader) loopback
(bootloader) spitest
(bootloader) i2ctest
(bootloader) pmic8058_led_test
(bootloader) ats
(bootloader) gpiow
(bootloader) gpior
(bootloader) clock
(bootloader) i2cr
(bootloader) i2cw
(bootloader) i2ctest
(bootloader) ulpi
(bootloader) changeCid
(bootloader) powertest
(bootloader) read_l2_acc_fuse
(bootloader) ltetest
(bootloader) sdio_loopback
(bootloader) sdio_setsize
(bootloader) sdio_readblk
(bootloader) sdio_writeblk
(bootloader) sdio_readblk
(bootloader) sdio_dumpreg
(bootloader) get_mdm9k_serial
(bootloader) clear_mdm9k_serial
(bootloader) update_prkey
(bootloader) emmc_boot
(bootloader) 8x60i2cr
(bootloader) 8x60i2crNoAddr
(bootloader) 8x60i2cwNoAddr
(bootloader) 8x60i2cw
(bootloader) poweron
(bootloader) poweroff
(bootloader) setvol
(bootloader) spi
(bootloader) fat
(bootloader) pmgpiow
(bootloader) pmgpior
(bootloader) 8058vregon
(bootloader) 8058vregoff
(bootloader) 8058vregw
(bootloader) 8058vregr
(bootloader) 8901vregon
(bootloader) 8901vregoff
(bootloader) 8901vregw
(bootloader) 8901vregr
(bootloader) mipi_test
(bootloader) chargeron
(bootloader) chargeroff
(bootloader) adc
(bootloader) readsimlocktype
(bootloader) enablesimlock
(bootloader) addsimlockcode
(bootloader) clearsimlockcode
(bootloader) listsimlockcode
(bootloader) clearunlockrecord
(bootloader) lite_heap_test
(bootloader) vibrate_test
(bootloader) getrtc
(bootloader) setrtc
(bootloader) getrtcalarm
(bootloader) setrtcalarm
(bootloader) pgfs
(bootloader) bumpclk
(bootloader) acpuclk_get
(bootloader) acpuclk_set
(bootloader) rpmclk_set
(bootloader) rpmclk_get
(bootloader) oschalt
(bootloader) tz_req
(bootloader) blow_efuse
(bootloader) blow_qfuse_cfg
(bootloader) dump_tzlog
(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) refurbish
(bootloader) get_identifier_token
(bootloader) checkSbl1
(bootloader) checkHWSecurity
(bootloader) checkKeycardID
(bootloader) enter
(bootloader) keytest
(bootloader) heap
(bootloader) boot
(bootloader) reset
(bootloader) powerdown
(bootloader) rebootRUU
(bootloader) heap_test
(bootloader) rtask
(bootloader) task
(bootloader) enableqxdm
(bootloader) gencheckpt
(bootloader) readmeid
(bootloader) readpid
(bootloader) writepid
(bootloader) readcid
(bootloader) writecid
(bootloader) readimei
(bootloader) writeimei
(bootloader) readsecureflag
(bootloader) writesecureflag
(bootloader) lock
(bootloader) list_partition_emmc
(bootloader) load_emmc
(bootloader) check_emmc
(bootloader) check_emmc_mid
(bootloader) read_mmc
(bootloader) load_modem_emmc
(bootloader) get_wp_info_emmc
(bootloader) send_wp_info_emmc
(bootloader) get_ext_csd_emmc
(bootloader) get_sector_info_emmc[/QUOTE]