This thread is to collect my findings about LGs GGW-H20N (HL-DT-ST BD-RE GGW-H20L) with Firmware YL02.

The drive is of the SATA variant and connected via PATA-SATA bridge (Marvell) to an Intel ICH4 UDMA 100 PATA port.

Firmware Update

A firmware update to YL02 with the drive connected externally via USB to SATA bridge (Scythe Kama Connect SCUPS-1000, JMicron) was not possible. The Update would start but hang. The update succeeded with the Marvell bridge.

Reading a badly pressed Data-CD-ROM

This is the Driver/Software-CD that came with my LiteOn LH18a1p drive.

Compared to other drives:
http://club.cdfreaks.com/1918360-post2.html
http://club.cdfreaks.com/1810122-post98.html

TRT-Test:

Taiyo Yuden, Type 1, 700MB, 52x, as sold by Verbatim

40x P-CAV writing speed selected, no slowdowns.
1538 C1 errors. A very good result for a full speed burn.

C1/C2/CU and Beta/Jitter scans done with the Plextor Premium:

Mitsubishi Chemicals Corporation, Type 3, 700MB, 52x, as sold by Verbatim

40x P-CAV writing speed selected, no slowdowns.
18283 C1 errors. A very good result for a full speed burn.

C1/C2/CU and Beta/Jitter scans done with the Plextor Premium:

Ritek, Type 7, 700MB, 52x, as sold by Maxell

40x P-CAV writing speed selected, no slowdowns.
11210 C1 errors, 63 C2 errors.

The result can be judged ok, since these media seem to come in a mixed quality. For comparison here the Plextor Premium2 has no problems with them (without PowerRec!):
http://club.cdfreaks.com/1859153-post102.html
here he has (with PoweRec!):
http://club.cdfreaks.com/1859156-post103.html

C1/C2/CU and Beta/Jitter scans done with the Plextor Premium:

Taiyo Yuden +R 16x (Yuden000 T03 00), as sold by Verbatim

Burn speed 16x P-CAV, no slowdowns.
While the error levels seem to be consistent with what i get from other drives with this batch of media, there seems to be so be a problem that let the B/J-Test fail.

Burst, Sum1, Beta/Jitter scans done in PX-760A:

Taiyo Yuden -R 16x (TYG03), as sold by Panasonic

Burn speed 16x P-CAV, no slowdowns.
The error levels are somewhat higher to what i get from other drives with this batch of media. Again there seems to be a problem that let the B/J-Test fail. This time this coincides with a PIF spike.

Burst, Sum1, Beta/Jitter scans done in PX-760A:

Verbatim +R 16x (MCC 004 00), CMC made, as sold by Verbatim

Burn speed 16x P-CAV, no slowdowns.
A very good result.

Burst, Sum1, Beta/Jitter scans done in PX-760A:

Verbatim -R 16x (MCC 03RG20), Prodisc made, as sold by Verbatim

Burn speed 16x P-CAV, no slowdowns.
The error levels (especially PIE) are somewhat higher to what i get from other drives with this batch of media. See for example Samsung SH S202N:
http://club.cdfreaks.com/1918375-post10.html

Burst, Sum1, Beta/Jitter scans done in PX-760A:

Sony +R 16x (Sony D21), as sold by Sony

Burn speed 16x P-CAV, no slowdowns.
A very good result.

Burst, Sum1, Beta/Jitter scans done in PX-760A:

Sony -R 16x (Sony 16D1), as sold by Sony

Burn speed 16x P-CAV, no slowdowns.
Aside from a lone PIF spike of little consequence, a very good result.

Burst, Sum1, Beta/Jitter scans done in PX-760A:

CMC Magnetics -R 16x (CMC MAG AM3), as sold by Philips (labeled made in Taiwan)

Burn speed 16x P-CAV, no slowdowns.
Quite a bit of PIF. Again B/J scanning fails at the first occurrence of a PIF spike.

Compared to other drives (media from same spindle):
http://club.cdfreaks.com/1922762-post15.html
http://club.cdfreaks.com/1600644-post108.html

Burst, Sum1, Beta/Jitter scans done in PX-760A:

Infomedia +R 16x (INFOME R30 00), as sold by Philips (labeled made in Taiwan)

Burn speed 16x P-CAV, no slowdowns.
A (very) good result.

Burst, Sum1, Beta/Jitter scans done in PX-760A:

TDK +R 16x (CMC MAG M01 0), as sold by TDK

Burn speed 16x P-CAV, no slowdowns.
A bad result. Especially since the drive continued to write a full speed and did apparently not notice the rising problems.

Compared to other drives (media from same spindle):
http://club.cdfreaks.com/1922811-post18.html
http://club.cdfreaks.com/1637016-post126.html

Burst (PIE), Burst (POE), Sum1, Beta/Jitter scans done in PX-760A:

TDK -R 16x (TTH02), as sold by TDK

Burn speed 16x P-CAV, no slowdowns.
A (very) good result. The PIF-cluster might be an individual media problem.

Burst, Sum1, Beta/Jitter scans done in PX-760A:

Moser Baer India +R 16x (MBIPG101 R05 01), as sold by Imation (labeled made in India)

Burn speed 16x P-CAV, no slowdowns.
Aside from a lone PIF spike of little consequence, a good result. The two PIF-clusters might be an individual media problem.

Burst, Sum1, Beta/Jitter scans done in PX-760A:

Moser Baer India -R 16x (MBI 03RG40), as sold by Imation (labeled made in India)

Burn speed 16x P-CAV, no slowdowns.
Aside from a PIF spike a good result. Jitter goes up.

Burst, Sum1, Beta/Jitter scans done in PX-760A:

Preliminary DVD-DL results

A word of warning to all who want to use this drive to burn DVD-DL media:

So far i've wasted two perfectly good Verbatim +RDL 8x media while trying to run tests. In both cases the writing process 'hung' after writing some MB into the disc. Since my current setup works just fine with DL on any other drive I have I supect the drive to be at fault. I'll report back once if find more time for further testing.

Nice review.

How do you find it at reading DVDs?

I tend to find it seems to give up reading and the error correction is not that great compared (using CDSpeed) to some of my other drives.

I've yet to do specific tests. So far it has read everything i've put into it (regular stuff that usually is in good shape, so that dosn't mean much).

I finally found some time to continue testing. I'm still not sure what caused my earlier problems with DL, but the only cause i was able to narrow it down to seems to be the fact that different software was trying to access the drive at the same time (notably Plextools, CD-DVD-Speed and ImgBurn running at the same time). Interestingly this has not been an issue with SL media and never an issue either with any other drive i used. Maybe there is a problem with software being able to 'lock' the drive while using it?

Verbatim +R DL 8x (MKM 003 00), as sold by Verbatim, MIS

Burn speed 4x CLV, no faster speed offered, no slowdowns.
Very good result.

Burst, Sum1, Beta/Jitter scans done in PX-760A:

TDK +R DL 8x (RicohJPN D01 67), as sold by TDK

Burn speed 4x CLV, no faster speed offered, no slowdowns.
Very good result.

Burst, Sum1, Beta/Jitter scans done in PX-760A:

Taiyo Yuden +R 16x (Yuden000 T03 00), as sold by Verbatim

Firmware: YL03
Burn speed 16x P-CAV, no slowdowns.
Very good result.
Compared to YL02: http://club.cdfreaks.com/2015110-post7.html
This time the Beta/Jitter test completes and there are noticably less PI errors.
TA-Test says, very good 4/4, good 3/4, very good 4/4.

Burst, Burst (zoomed), Sum1, Beta/Jitter scans done in PX-760A: