If I have some time over the weekend or next week, I may take a look at the hex dumps of these different firmware versions of GH24NSC0 svc codes nsd0 and jr23, and “DRW-24F1ST d” fw versions 1.00 and 2.00
Did you notice any difference in operation or performance between your two DRW-24F1ST d drives?
The store I usually buy from received a new stock of GH24NSD1 drives recently and I asked them about the manufacture date. They replied that it is November 2018. I might check them myself next time I visit the store.
If you read the sticker on the drive, you should also look for any “svc code” and firmware version.
If you look at the previous pics posted on here, the GH24NSD5 had two different firmware versions. The April 2018 and July 2018 manufactured ones in russia had firmware LV00, while the November 2018 one in Japan had a firmware LJ00.
My GH24NSC0 with “svc code: jr23” has a firmware LY00, with a manufacturing date of Sepetember 2018.
So far no obvious differences which are noticable.
This is too much information to ask about. I need to get my hands on one.
I’ve always found that most folks working at computer stores, know very little to nothing about dvdr/blurayr drives. So I usually take a look at an actual drive in my hands at the retailer’s offline shop, to read the information on the stickers.
A boxed GH24NSD6 from russia.
It has a manufacturing date of April 19, 2018 and firmware LU00.
The “item added : 10.9.2018” line (translated from russian via google translate) asserts it was available since September 2018.
Looking more closely at the April 2018 manufacturing dates for these GH24NSD5 and D6 drives from russia, they are:
GH24NSD5 -> April 8, 2018
GH24NSD6 -> April 19, 2018
This may suggest each batch of dvdr drives takes around 11-12 days to manufacture and go through quality control, until they are ready to be shipped to LG’s warehouses or distributors.
(I have no idea how many dvdr drives they can manufacture per batch).
I found another Asus “DRW-24F1ST d” drive I have. It has a January 2018 manufacturing date, and firmware 1.00
Another “DRW-24F1ST d” oddity I noticed between the 1.00 and 2.00 firmware drives, were the front bezels.
(December 2017 and January 2018 manufacturing dates)
firmware 1.00 -> nothing printed on the front bezel
(September 2018 manufacturing date)
firmware 2.00 -> Asus and other logos printed in white on the front bezel
I can not understand the change of model names if there is no hardware difference or new feature to justify a drive as new.
Dunno what Asus do, but I don´t feel any difference in writing-quality with B0, C0 and D1. But all these drives have different chipsets
And the D1 is more noisy than B0 and C0
I guess only if someone opens a D5/6 we will see if something is different to D1
I looked casually through various firmware binaries of drives I have, to see if there are any distinctive differences.
GH24NSC0 “svc code: nsd0”
GH24NSC0 “svc code: jr23”
“DRW-24F1ST d” firmware 1.00
“DRW-24F1ST d” firmware 2.00
From a casual first look, the string ‘MAX_DTR’ is missing in the firmwares from my GH24NSC0 “svc code: jr23” and “DRW-24F1ST d” firmware 2.00 drives.
The ‘MAX_DTR’ string is present in the firmwares from my GH24NSC0 “svc code: nsd0” and “DRW-24F1ST d” firmware 1.00 drives.
Also looked through the gh24nsd1 firmware binary posted by Tester_1 in the drw-24d5mt thread, where the ‘MAX_DTR’ string is present in the firmware binary.
If you know how to use the devilsclaw flasher program to extract the firmware from your June 2018 manufactured DRW-24D5MT drive, you might be able to figure out if it is a D0/D1 or D5/D6 rebadge.
Some more casual inspection of these firmware binaries, would be suggestive string names.
The GH24NSC0 “svc code: nsd0” and “DRW-24F1ST d firmware 1.00” both have the string ‘NSD0’ in their respective firmware binary files.
The GH24NSC0 “svc code: jr23” and “DRW-24F1ST d firmware 2.00” both have the string ‘JR23’ in their respective firmware binary files.
It’s an open source program which dumps or writes firmware to LG drives, dating back to the renesas chipset models over a decade ago.
There was a very long thread on the development of this devilsclaw flasher tool on here.
It still works for dumping firmware from modern LG dvdr drives with mediatek chipsets.
(I don’t use devilsclaw flasher for writing firmware at all).