Cannot remap my car - ECU Locked?

[Rawhide]

Hi, I hope someone can help here. I have a 182 which I want to mostly return to a stock state of tune. It has been remapped (think by K-Tek) in the past, or at least there is an invoice in the service history for that.
I used to own a Trophy and remapped that with the RS Tuner to the 98 ron map. I wanted to do the same for my car. I've removed the intake, refitted CAT and exhaust centre section and it smells like it's running rich.

The error I'm getting is

I am thinking the ECU is locked and cannot be remapped?
Henk has sent me the OEM map but I can't upload it.
Any ideas?

 

[Rawhide]

And here is the other error message from the next screen..

 

[trenace188]

Looks like your car already has the rstuner

 

[Rawhide]

The car has been mapped by K-tek I think. I want to overwrite that map..

 

[Ol’ Tarby]

The car has been mapped by K-tek I think. I want to overwrite that map..

It was last mapped on the 16th July last year, by an RS Tuner

 

[ADS_V6]

its got the rs tuner remap already on it matey,running rich could be the front lambda sensor causing that

 

[Rawhide]

I have a replacement lambda to fit. However after putting the car back in the light went off and has stayed off. I'm wondering if it actually needs it now?

 

[ADS_V6]

if u got a new 1 fit it i would

 

[Rawhide]

I've had another go installing the OEM map (provided by Henk) and it's taken it. However it was already tuned with the standard map. I think I already have the 98 Ron map which looks to have already been installed in the past on the ECU.