Haldex Gen4 Control Unit Replacement

Hello,

"I'm having a problem with the Haldex system on my 2013 Octavia Scout 2.0 TDI. It's not working."
Steuergerät lässt sich nicht auslesen, wird mit VCDS nicht erkannt. Nach der optischen Prüfung, klarer Fall von Wasserrintritt in Folge dessen Platine vergammelt. SoKeep up the good work.
Option 1: Have the control unit repaired, but the vehicle will not be drivable during that time.
Option 2: Find a used control unit.

Now I've seen that there are also replicas of this control unit available, and they're offered at a relatively low price.
Has anyone ever tried this?
My question is, do these control units actually have any software installed on them?
Or are they naked?
The car has already driven over 400,000 kilometers, and I don't know how long the all-wheel drive system has been malfunctioning.
The goal is to get the all-wheel-drive system running at the lowest possible cost.
Are there any user reviews available?
It's about replica engine control units (ECUs) from AliExpress, costing around 100 euros.

Okay, and finally, for anyone who might want to try this.
I ordered the control unit from AliExpress.

The delivered control unit was definitely an original part, but it had been meticulously sandblasted, and the labels had been removed.
I assume that the internal components are either new or have been repaired.
I installed it yesterday, and my all-wheel drive is working perfectly again.
The control unit can be accessed and read using VCDS.
Measurement data blocks checked; no errors remain stored, even after a longer drive.
The humming and jerking noises from the rear axle have completely disappeared.
Definitely recommendable for 106 euros.