Black screen when using Sync4 Touchscreen on SYNC3

[LEEJUNE]

The original screen of SYNC3 was broken, so we replaced it with the 8-inch screen of SYNC4, which turned out to be black and could hear broadcasts. It seems that the function is normal except for not displaying.

After consulting, it was found that SYNC3 3.3 does not support this fourth generation screen, so we had to upgrade to 3.4

But I don’t like the theme and color scheme of 3.4. How can I make 3.3 or 3.2 support this screen?

Is it true that versions below 3.4 lack drivers for high-resolution screens?
Where can I get it?

Attachment:
Comparison of two generations of screens (from the Internet):

New Sync3&Sync4 Touchscreen
*Ultra Thinner (1.4 inch vs. 0.7 inch)
*Bigger (8 inch vs. 8.46 inch)
*Sharper (117 ppi vs. 189 ppi)
*HD Resolution (800 * 480 VS 1334 * 882)

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SYNC Region: CN

Navigation Variant: Nav

Manufacturer Year: Pre MY20

Install Type: Retrofit

Old SYNC Version: 3.3.19052

New SYNC Version: 3.4.23188

Do you have a error message, if so what is it?

Update Method: CyanLabs Manual Method

[F150Chief]

Not possible. You might try asking this question at FMods. They have developed a few fixes for Sync 3. Maybe ask there if there is something for this.

Optionally, just purchase a Sync 3 screen and sell off the Sync 4 screen. You can find part numbers for compatible screens in the hardware database on this site.

[LEEJUNE]

Thank you for your help. I will consider your suggestion.