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[MOD][ROOT] Overclock your screen to 75hz refresh rate (other refresh rates later)

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By ugene1980, Senior Member on 24th July 2019, 03:36 AM
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This was released by a two Chinese developers ZhenXin(@realheart) and Andy Chang(@atomsand)

Current released mods: 75hz & 81hz (For Android 9) and 66hz/69hz/72hz (For Android 10)

Android 9 Mods Currently works/tested on:
- Chinese dev rom 9.7.11 and below ONLY (xiaomi.eu weekly works too as it is based on the chinese dev rom)
- Chinese stable rom 10.3.16 and below ONLY (xiaomi.eu stable works too as it is based on the chinese stable rom)
- Global/Indian stable rom 10.3.3.0 - see here thanks @954wrecker
- I tested it on xiaomi.eu 9.7.4 (imho the most stable version) on a China set K20 Pro 8gb+128gb
- 75hz and 81hz both working perfectly
- Minimal battery drain due to slight overclock from original(60hz) for the 75hz version, 81hz seems minimal as well

Android 10 Mods Currently works/tested on:
- 9.8.15 working well
Use it at your own risk! It is unknown if it causes any long term or temporary damage to the screen yet. (But since it uses the same screen as the mi9, which has the same mod released a while back, it should be fine!)

==================================
USAGE INSTRUCTIONS
==================================

MAKE A BACKUP OF DTBO PARTITION FIRST!! (Two Methods choose one)
>>>Via TWRP
- Boot to TWRP
- Select Backup
- Select only the DTBO partition
- Select storage location, click backup

>>>Via Lanthanum System Toolbox App
- Download the attached Lanthanum System Toolbox.apk file, install the apk, then open it
- Select partition settings from the hamburger menu
- Select dtbo, make a backup of it (Export image)

FLASH THE MOD (Four methods choose one)
>>>Via TWRP
- Download the attached dtbo_K20P_75Hz_d2e98.img (or dtbo_K20P_81Hz.img)
- Copy it to your thumbdrive or phone
- Boot to TWRP
- Select install
- Select install image
- Choose your image file
- SELECT DTBO partition to flash the file to
- Swipe to confirm flash!

>>>Via Fastboot
- Connect phone(bootloader mode) to computer
- Open up command prompt
- Type fastboot devices to ensure device is connected
- Type: Fastboot flash dtbo dtbo_K20P_75Hz_d2e98.img (or dtbo_K20P_81Hz.img)
- Done!

>>>Via Lanthanum System Toolbox App
- Download the attached Lanthanum System Toolbox.apk file, install the apk, then open it
- Select partition settings from the hamburger menu
- Select dtbo again, click flash image, and choose the dtbo.img file
-Reboot

>>>Via Magisk module
- Coming soon, will update once I downloaded it

You should see the changes immediately after the restart. It's way smoother than before.
If you want to go back to default, flash your backed up dtbo image file either via fastboot or TWRP restore partiton

==================================
DOWNLOAD
==================================
Lanthanum_System_Toolbox.apk
For Android 9:
dtbo_K20P_75Hz_d2e98.img
dtbo_K20P_81Hz.img
For Android 10:
dtbo_K20Pro_(Q)_60hz.zip
dtbo_K20Pro_(Q)_66hz.img
dtbo_K20Pro_(Q)_69hz.img
dtbo_K20Pro_(Q)_72hz.img
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24th July 2019, 04:03 AM |#2  
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Will work later on eu 10.3.15 and above? Really want that feature
24th July 2019, 04:55 AM |#3  
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Quote:
Originally Posted by danielofata

Will work later on eu 10.3.15 and above? Really want that feature

I have not tested it on stable branch myself, BUTsaw on the chinese forums that it works fine on 10.3.16, so it can be safely assumed it will work on eu 10.3.16 and below as incompatibility is caused by kernel gpu driver versions
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24th July 2019, 05:05 AM |#4  
954wrecker's Avatar
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Flashed it on the indian rom and it's working good so far.
Attached Thumbnails
Click image for larger version

Name:	Screenshot_2019-07-23-21-04-46-717_com.miui.gallery.jpg
Views:	7724
Size:	120.8 KB
ID:	4796525  
24th July 2019, 05:32 AM |#5  
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Ho Chi Minh
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Will any dev brind duo speaker to K20 pro? I came from Mi6 and miss this feature.
24th July 2019, 05:37 AM |#6  
954wrecker's Avatar
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Thanks Meter: 1,543
 
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Quote:
Originally Posted by demonntl

Will any dev brind duo speaker to K20 pro? I came from Mi6 and miss this feature.

I used a magisk module on the mix 3, but it's not really stereo it's just pushing sound out of the phones earpiece.
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24th July 2019, 05:49 AM |#7  
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Quote:
Originally Posted by 954wrecker

Flashed it on the indian rom and it's working good so far.

Thanks for testing, please share the rom version you used it on!
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24th July 2019, 05:54 AM |#8  
954wrecker's Avatar
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Quote:
Originally Posted by ugene1980

Thanks for testing, please share the rom version you used it on!

Thanks for posting this I've been waiting for it to pop up.
Attached Thumbnails
Click image for larger version

Name:	Screenshot_2019-07-23-21-53-39-096_com.android.settings.png
Views:	3394
Size:	161.9 KB
ID:	4796546  
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24th July 2019, 07:47 AM |#9  
Junior Member
Thanks Meter: 1
 
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Quote:
Originally Posted by ugene1980

This was released by a two Chinese developers ZhenXin and Andy Chang, The 90hz mod should be coming soon as well

Currently works/tested on:
- Chinese dev rom 9.7.11 and below ONLY (xiaomi.eu weekly works too as it is based on the chinese dev rom)
- Chinese stable rom 10.3.16 and below ONLY (xiaomi.eu stable works too as it is based on the chinese stable rom)
- Global/Indian stable rom 10.3.3.0 - see here thanks @954wrecker
- I tested it on xiaomi.eu 9.7.4 (imho the most stable version) on a China set K20 Pro 8gb+128gb
- 75hz working perfectly
- Minimal battery drain due to slight overclock from original(60hz)

Use it at your own risk! It is unknown if it causes any long term or temporary damage to the screen yet. (But since it uses the same screen as the mi9, which has the same mod released a while back, it should be fine!)

==================================
USAGE INSTRUCTIONS
==================================

MAKE A BACKUP OF DTBO PARTITION FIRST!! (Two Methods choose one)
>>>Via TWRP
- Boot to TWRP
- Select Backup
- Select only the DTBO partition
- Select storage location, click backup

>>>Via Lanthanum System Toolbox App
- Download the attached Lanthanum System Toolbox.apk file, install the apk, then open it
- Select partition settings from the hamburger menu
- Select dtbo, make a backup of it (Export image)

FLASH THE MOD (Four methods choose one)
>>>Via TWRP
- Download the attached dtbo_K20P_75Hz_d2e98.img
- Copy it to your thumbdrive or phone
- Boot to TWRP
- Select install
- Select install image
- Choose your image file
- SELECT DTBO partition to flash the file to
- Swipe to confirm flash!

>>>Via Fastboot
- Connect phone(bootloader mode) to computer
- Open up command prompt
- Type fastboot devices to ensure device is connected
- Type: Fastboot flash dtbo dtbo_K20P_75Hz_d2e98.img
- Done!

>>>Via Lanthanum System Toolbox App
- Download the attached Lanthanum System Toolbox.apk file, install the apk, then open it
- Select partition settings from the hamburger menu
- Select dtbo again, click flash image, and choose the dtbo.img file
-Reboot

>>>Via Magisk module
- Coming soon, will update once I downloaded it

You should see the changes immediately after the restart. It's way smoother than before.
If you want to go back to default, flash your backed up dtbo image file either via fastboot or TWRP restore partiton

==================================
DOWNLOAD
==================================

Does it requires root or only bootloader unlocked.
Can i use it without root?
24th July 2019, 08:15 AM |#10  
Junior Member
Thanks Meter: 2
 
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Quote:
Originally Posted by ugene1980

This was released by a two Chinese developers ZhenXin and Andy Chang, The 90hz mod should be coming soon as well

Currently works/tested on:

- Chinese dev rom 9.7.11 and below ONLY (xiaomi.eu weekly works too as it is based on the chinese dev rom)
- Chinese stable rom 10.3.16 and below ONLY (xiaomi.eu stable works too as it is based on the chinese stable rom)
- Global/Indian stable rom 10.3.3.0 - see here thanks @954wrecker
- I tested it on xiaomi.eu 9.7.4 (imho the most stable version) on a China set K20 Pro 8gb+128gb
- 75hz working perfectly
- Minimal battery drain due to slight overclock from original(60hz)

Use it at your own risk! It is unknown if it causes any long term or temporary damage to the screen yet. (But since it uses the same screen as the mi9, which has the same mod released a while back, it should be fine!)

==================================
USAGE INSTRUCTIONS
==================================

MAKE A BACKUP OF DTBO PARTITION FIRST!! (Two Methods choose one)
>>>Via TWRP
- Boot to TWRP
- Select Backup
- Select only the DTBO partition
- Select storage location, click backup

>>>Via Lanthanum System Toolbox App
- Download the attached Lanthanum System Toolbox.apk file, install the apk, then open it
- Select partition settings from the hamburger menu
- Select dtbo, make a backup of it (Export image)

FLASH THE MOD (Four methods choose one)
>>>Via TWRP
- Download the attached dtbo_K20P_75Hz_d2e98.img
- Copy it to your thumbdrive or phone
- Boot to TWRP
- Select install
- Select install image
- Choose your image file
- SELECT DTBO partition to flash the file to
- Swipe to confirm flash!

>>>Via Fastboot
- Connect phone(bootloader mode) to computer
- Open up command prompt
- Type fastboot devices to ensure device is connected
- Type: Fastboot flash dtbo dtbo_K20P_75Hz_d2e98.img
- Done!

>>>Via Lanthanum System Toolbox App
- Download the attached Lanthanum System Toolbox.apk file, install the apk, then open it
- Select partition settings from the hamburger menu
- Select dtbo again, click flash image, and choose the dtbo.img file
-Reboot

>>>Via Magisk module
- Coming soon, will update once I downloaded it

You should see the changes immediately after the restart. It's way smoother than before.
If you want to go back to default, flash your backed up dtbo image file either via fastboot or TWRP restore partiton

==================================
DOWNLOAD
==================================
Attachment 4796510
Attachment 4796522


Any inconvenience like the green tint in Mi 9? Low/distorted colors?

Will it be possible to overclock up to 84hz like Mi 9?
24th July 2019, 09:02 AM |#11  
OP Senior Member
Thanks Meter: 86
 
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Quote:
Originally Posted by Sif1110

Does it requires root or only bootloader unlocked.
Can i use it without root?

- Flash via fastboot or twrp = requires bootloader unlocked
- Flash via the Lanthanum System Toolbox app = requires root

Quote:
Originally Posted by majimbo

Any inconvenience like the green tint in Mi 9? Low/distorted colors?
Will it be possible to overclock up to 84hz like Mi 9?

- No green tint at low brightness so far for me
- Developer hinted at a 90hz mod which will come out late, personally i think 75hz is a great value compromise , minimal battery drain and much smoother than 60hz
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