Difficulty u11sprit modify cid and mid can’t boot, can’t enter htc download mode

[yanxinchao3]

Masters! Hello, everyone, I am a user from China, and I have gone over the wall and came to the xda forum.
Due to my limited level of English, I have read XDA's htc forum with the help of Google Translate, and the resources of domestic players are scarce.
After watching the S-on mode to modify the MID and CID tutorial I began to try
https://forum.xda-developers.com/u11/how-to/how-to-change-cid-s-sunshine-t3888170/page4
I modified the three files sdf1 sdf2 sde1 in the /dev/block/ directory according to the above tutorial, and ran adb push sdf1 /dev/block/ in TWRP mode
adb push sdf2 /dev/block/
adb push sde1 /dev/block/
Then restart in the twrp mode and enter the download mode, and the phone cannot be turned on after a black screen
The previous state of my phone was
HTC U11 SPRINT version
s-on
Officially unlocked
Version is sprint2.33.651.10
The mobile phone now has various combinations of keys and all kinds of constant keys are all in the black screen state, I will show the picture
The problem now is to enter separately under cmd
fastboot devices This command can discover devices
fastboot getvar mid pop-up error message
fastboot getvar cid pops up error message
fastboot getvar all

C:\Users\Administrator\Desktop\adb-htc>fastboot devices
FA75Y0501577    fastboot
htc_fastboot finished. total time: 0.109s

C:\Users\Administrator\Desktop\adb-htc>fastboot getvar all
(bootloader) boot-mode:FASTBOOT
(bootloader) unlocked:yes
(bootloader) off-mode-charge:0
(bootloader) charger-screen-enabled:0
(bootloader) battery-soc-ok:yes
(bootloader) battery-voltage:4341
(bootloader) version-baseband:
(bootloader) version-bootloader:
(bootloader) variant:MSM UFS
(bootloader) partition-type:cache:ext4
(bootloader) partition-size:cache: 0xE000000
(bootloader) partition-type:userdata:ext4
(bootloader) partition-size:userdata: 0xD9D800000
(bootloader) partition-type:system:ext4
(bootloader) partition-size:system: 0xFE800000
(bootloader) secure:yes
(bootloader) serialno:FA75Y0501577
(bootloader) product:HTC_Phone
(bootloader) max-download-size:536870912
(bootloader) kernel:uefi
all:
finished. total time: 0.014s
htc_fastboot finished. total time: 0.152s

C:\Users\Administrator\Desktop\adb-htc>fastboot getvar mid
getvar:mid FAILED (remote: GetVar Variable Not found)
finished. total time: 0.002s
htc_fastboot finished. total time: 0.136s

C:\Users\Administrator\Desktop\adb-htc>fastboot getvar cid
getvar:cid FAILED (remote: GetVar Variable Not found)
finished. total time: 0.002s

So is there any other way to use fastboot
Return the modified file to the original directory
I changed the cid and mid to 5000 for the mainland China version
The phone is now under a black screen
Run fastboot flash radio
fastboot flash boot
fastboot flash boot
They are all fed back such information FAILED (remote: verify HOSD fail)
C:\Users\Administrator\Desktop\adb-htc>fastboot flash radio radio.img
htc_fastboot v3.0.9.3 (2015-06-30)
target reported max download size of 536870912 bytes
sending 'radio' (61052 KB)...
OKAY [ 1.805s]
writing 'radio'...
FAILED (remote: Not allowed on PRODUCTION device)
finished. total time: 1.808s
htc_fastboot finished. total time: 2.124s

C:\Users\Administrator\Desktop\adb-htc>fastboot flash boot C:\Users\Administrato
r\Desktop\mxhtcsjgj\boot.img
htc_fastboot v3.0.9.3 (2015-06-30)
target reported max download size of 536870912 bytes
sending 'boot' (29649 KB)...
OKAY [ 0.893s]
writing 'boot'...
FAILED (remote: Not allowed on PRODUCTION device)
finished. total time: 0.895s
htc_fastboot finished. total time: 1.232s

C:\Users\Administrator\Desktop\adb-htc>fastboot flash hosd C:\Users\Administrato
r\Desktop\adb-htc\hosd_signed.img
htc_fastboot v3.0.9.3 (2015-06-30)
target reported max download size of 536870912 bytes
sending 'hosd' (34169 KB)...
OKAY [ 1.010s]
writing 'hosd'...
FAILED (remote: verify HOSD fail)
finished. total time: 1.253s
htc_fastboot finished. total time: 1.593s