Please run Time Travel in Piplay market press F and frame rate & latency will show in headset.
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I always wondered why everyone was talking about the nearly non existing SDE and bad ghosting. Which my one doesn’t have.
When I was talking to the Support I asked about the difference between those two serial numbers only thing they said it’s a different batch.
I attached the skype conversation.
Time Travel showed about 16ms and 60fps.
there are mirrored image on my main screen and main screen is 60hz
i turned vsync of and it give me 15ms and 68fps
what kind of result it normally give?
could it be BE model. me and some other just had good luck and recieved BE in normal version box?
so this (other batch) is BE
Okay folks i am going to explain some manufacturing processes. I have worked for manufacturing sector for 15+ years.
With Gearbest sellingba v2 model (see @crony post for details of when v2 came out) prior to selling v1 shows they are not following a principle called FIFO(First In First Out).
@Crony has stated in Korea both the PiMax 4k v2 & PiMax BE are being sold there.
Componet wise both Models share a lot of common parts.
-Chasis, lenses
-straps head back rest
-circuit mainboards
-cables etc.
Now for key differences.
-different display panel
-different front bezels
-one has active shutter glass (4k)
-different firmware
So lets say there were making a batch of BE (Oled Qhd) at the end of the run the line operators should have ensured all BE specific componets were removed (Oled display with serials/front bezel & BE packaging)
Now however it happened I theorized units were made with as the BE model internals with the 4k front bezel & 4k packaging. Serial number stickers are likely packaged with the Display panels. The barcode sticker on the headset is then scanned during firmware installation to ensure correct firmware is loaded. The headset then gets packaged where the serial barcode is scanned and label gets printed and affixed to the box.
Again this is a theorectic on their mfg process.
A friend of mine for example bought an audio cd
Meatloaf: Bat Out Of Hell. Everything on the surface looks great. However play that CD & your ears experience Janis Joplin(sp?)
So if the above is correct; typically if there wasn’t a pre existing procedure then new measures are implemented to help prevent a quality issue from re occuring and/or increased frequency on checks.
so basicly its allmost one in million change to get headset like mine?
is every 102 with oled then? or is 102 basicly BE serial
In terms of a manufacturing error the ideal numbers are parts per million. Mind getting soggy lol
Basically a formula is used to measure the defect to quantity shipped vs defects found multiplied by a million.
Ideal target is 0 ppm shipped to customers. 0 ppm when acheived is a world recognized acheivement.
But this target as you can see is not easy & requires acute employees on all levels.
As for the serial# question. I would say yes the 102 series would be the Oled QHD (BE model) as confirmed by @Sjef testing the firmware.
Car vin numbers if you check a repair manual different parts will tell you what mfg plant, factory color & options it has.
In this case the “2” seems to represent the oled model backed up by the firmware probing.
On the bright side even though its not the 4k model; i believe the BE oled model typically retails for more. However this is not a good situation as it does affect a company’s reputation. But like the defective lense issue they had awhile back it’s more how they respond & correct an issue after identified that matters.
And to that end look at the quality of support folks that have used skype with teamview? 
I just had a PM from somebody who has a 102 and he also said he has quite a bit of SDE, especially compared to his PSVR.
Everybody with 102 seems to complain about the SDE. And given that the firmware for 102 mentions 2k I have little doubt that it’s indeed 2k.
Maybe indeed it was a production error. Yet, Pimax should have called those headsets back. In fact, I think they still should exchange them for free and pay shipping for anyone who wants to replace it with a 100. That’s the least they can do.
I wonder if it’s possible to just replace the display with 4k to 2k oled with firmware on the first version of the headset.
As it seems to me it is especially important for those who killed their Garrintsu and the screen of 4k just can not be bought.
But still it would be nice if in the future there was an opportunity to replace 4k ips by 4к oled
I think that is very possible if you can get right panel and replace firmware. Biggest problem would be that adapter board between main board and display board. It is pimax part and that would be hard to get.
this part
Indeed, people who have these particular models are not getting the image fidelity they should but @ the same time, they are getting the benefit of no ghosting, etc.
They must pick their poison but they also are entitled to what they actually bought at absolutely no cost if they so desired.
Checking in… Received my headset a couple days ago. Have been disappointed since 
The screen door effect is prevalent – I was shocked, everyone praised the headset for this very reason!
The brightness is not adjustable at all… Options are grayed out in latest software, adjusting via the debug does nothing. My 102 headset will not function with pimax ver 1.9 nor can you adjust the brightness.
I bought two the same day, this one, and one that is still being shipped (for my bro). I’ll report in when the second headset arrives. For now, I’ve messaged gearbest and I’m hoping they’re willing to compensate in someway.
Yes this issue is awaiting support. As being the weekend please be patient.
To summerize it appears there has been a manufacturing issue with that the oled BE model which ships with a qhd (2160x1440) panel has been packaged in the 4k model box.
Check the link above to link to 4 way compare. The 102 serial should be similar to tge Deepoon E3 model. Many thanks to @VTS for this awesome contribution.
The 100 serial will look as shown in the video compare.
Additionally here is 2 pics from Unity chan provided by by @rrrokkaa of whom brought this issue to light as he has both the 100 & 102 serial.
LCD panel type? - #54 by rrrokkaa
In his pics look at the face. One you can see a newspaper effect while the other is clear.
I’m still not really sure how this could have been an ‘accident’. Pimax released the firmware for this specific 102 version: http://community.openmr.com/t/release-pimax-4k-firmware/20
This is a firmware for a 2k panel. If it was an accident, then they would have released firmware for a 4k panel (believing the 102 would have a 4k panel).
It really looks like Pimax has been selling an 2k panel on purpose, hoping people wouldn’t find out about it. I don’t have any other explanation. But let’s see what Pimax says, it’s almost business time in China, I guess they open in about an hour.
While i do agree it “looks fishy” but at the same time there should be a category for the BE model.
But its missing.
We have
PiMax 4k
PiMax 8k
So as with the car vin code & @crony who posted in Korea both models are openly sold. I will keep with the idea of a major manufacturing error. Though the fact of the front bezel/face plate does at first glance create the appearance of fowl play.
The 100 vs 102 demonstrates with your firmware probing that the 3rd digit represents panel change.
This of course is on the same scale as the defective lens issue of the past.
So lets add @PiMAX @PIMAX-Support & @deletedpimaxrep1
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You are in the unique position of having both to view.
The 102 photo looks much sharper but with more SDE whereas the 100 photo has little SDE but looks blurry from that photo.
So which one do you prefer when you take into account image quality and ghosting?
100 has sharper image and less sde. It might be better for movies.
102 has more sde but no ghosting at all. It’s absolutely my choice for gaming.
That’s good to hear as I have a 102 in a box but not tried it yet as need to build a PC first. Have you tried a Rift or Vive and if so how does the SDE compare to the 102?
I think there are 2 main reasons to get a Pimax rather than the Rift of Vive - it is cheaper and it has less SDE so I’m very interested in how it compares.
Checkout this link the pimax with serial 102 should be similar to the deepoon e3.
http://community.openmr.com/t/pimax-competition-other-hmds/1327/199?u=heliosurge