TDK DVD-R 1-8x DVD-R47CBEC25 Spindle 25Disc

I have a Pioneer 107D, hope it isn’t a dvd-recorder problem (think not: with other media works good), but i’ve just bought a pack of theese DVDs and i cannot read info for any of them :confused:

Here there is what Kprobe says…

Drive info:

VID PIONEER
PID DVD-RW DVR-107D
F/W Revision 1.20
Date Code 04/09/21 PIONEER
Region 2
Vendor Resets Available 4
User Resets Available 4
RPC Scheme RPC II

(after this row Kprobe gives me an error)

Disc info:

Disc Type UNKNOWN
Manufacturer
Material Unknown
Media ID 0::
Length 0::
Capacity 8.389E6 MB
Free Size 0.00 MB
Free Blocks 0
Total Tracks -1
Maximum Read Speed 40x
Maximum Write Speed 24x
Current Write Speed 24x CLV
Write Speed Performance Descriptor 1 24x CLV
Write Speed Performance Descriptor 2 20x CLV
Write Speed Performance Descriptor 3 16x CLV
Write Speed Performance Descriptor 4 12x CLV
Write Speed Performance Descriptor 5 10x CLV
Write Speed Performance Descriptor 6 8x CLV
Write Speed Performance Descriptor 7 4x CLV

Nero locks up when i try to burn one of theese disks, and if it not crash it shows me 800MB free… :confused:
Anyone had similar problems?

Should i change firmware? (i’ve just updated to official 1.20)
Should i change burner?
Or should i kick the store director? :smiley:

P.S. with a DVD-ROM LG the problems are the same.

I downloaded DVD identifier and it says that the media is incompatible, but here pioneer says TDK 8x are supported from firmware 1.16 :confused:

i’ve tried with 1.18 and 1.20 offical