Afaik you cannot access gpios which are mapped to a device (here the moddef0). I just noticed that the sfp is not detected.
He probably means literary pull down in hardware terms. It means pull to zero, preferably via resistor.
i guessed he meant via gpio-lib/sysfs setting this gpio to low…at hardware layer imho it is hard to access (especially when board is running) without shorting anything else (once i know the pads to do this)
Well, it is not that hard if you have the right tools. It is a development board for a reason.
I was hoping that this is a fix to mend the horrible signal to noise ratio degradation when SFP is not populated, but it seems the core PCB design remains same. Yes I am ranting here, because you could simply look at AsiaRF board design and take some notes and learn. High speed signal routing, ESD protection measures and heat management, just copy, paste, but oh well…
BTW I just retired my BPI-R4 due to various device quirks. I still use BPI-R3 as it holds pretty well, besides the bug you cannot plug 100Gb device to the switch part, it still stalls making it dog slow.
When it will be available in market ? 
Like BE19000 almost 2 years or 3 from announcement date 
Nice Update!!! The BPI-R4 V1.3 looks like a solid refinement with better serial port protection, improved SIM/eSIM support, and some useful hardware optimizations. Good to see small but meaningful upgrades. Looking forward to its availability.
Hello, how do I purchase one of these new boards? Ideally as a kit.
As far as I know, BPI-R4 V1.3 is expected to be released in July.
Stay tuned.
I looked at the BPI-R4 Pro schematic:
It looks like the new v1.3 revision of the R4, but I’m not sure …
→ Have you had any problems with the Pro?
I thought the problem on the R4 v1.1 had been “solved”?:
→ [BPI-R4] Zyxel PMG3000-D20B SFP module not detected - #58 by simon
→ Sadly, Simon did not answer you …
7 July its a great day and the weather is hot , so can we see hot sales 
with V1.3
Please be patient and wait a little longer. Sales are expected to begin in early or mid-August.
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As far as I know, the first small batch of V1.3 went on sale in early August and sold out a few days ago. The next batch is expected at the end of the month, so please keep an eye on BPI’s sales channels.
@squy Hi , but we didn’t see any annoucment in website or in Aliexpress …pages mentiong the new board number on topic of the product (Example Wifi BPIR4 BE14 V2.1)
I mean as buyer how I will know this board is the new module or the old one ? To be honest i’m daily entering Aliexpress BPI store but nothing new I saw – except WIFI BE14
Stock for the R4 V1.1 version is depleted; all future sales will be for the V1.3 version. Please wait patiently for the next batch arriving at the end of the month.
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Do they have 4 or 8GB of Ram?
Currently, only the 4GB version is available; the 8GB version cannot be produced due to a shortage of DDR chips.
@squy if someone ordered new BPI-R4 Router package (Board+WIFI) End of August will get the new board V1.3 ? or only on sparate board for the new version ?
By the end of August and the beginning of September, only the new versions of both the R4 and BE14 boards should be available for sale. However, I strongly suggest you check with the seller before purchasing.