What should I do in this case as I think the cable is the issue, driver, bootloader also can be the issue as the board is completely fine
I think the chip is the issue. FTDI doesn't make the chip with this SOIC-16 IC package, so some monkey business is afoot.
All the "FTDI FT232RL" chips you see on the cheap products from the Chinese sellers (and the domestic resellers of the same products) are counterfeits, but those counterfeits are completely functional. It seems that these strange unlabeled SOIC-16 chips that identify as the 0403:6001 VID/PID pair of the FTDI FT232 and family are either non-functional, or else you must jump through some unknown hoops to get them working, similar to what we have to do with the sketchy unlabeled chips that identify as CH340. Unfortunately I don't have any idea of what might be the procedure for getting these chips working, so I can't help you with that.
My recommendation is for you to contact the seller of this product and request a refund. If you bought it on a buyer friendly marketplace like Ebay or Amazon, the seller will likely just give you a refund without requiring you to do a refund because they know very well that they sold you garbage and are just hoping you won't give them a bad review or report them for selling counterfeit products.
No the chip is fine It's working good
I have got it checked the chip is good the cable is the issue or else I'll check with my friend who is working on Arduino
But if the issue persists in the chip what ways can I make it working
I think it's the same chip as in this case but it's unmarked
Take the time to closely compare your chip:
Against their chip:
There is a much more significant difference beyond the lack of labeling on your chip. Your chip has a SOIC-16 IC package, while the FT232RL has an SSOP-28 IC package. Different number of pins and different dimensions.
They are not the same!
So we went from COM8 in post #17 to COM5 in post #19. Did you try COM5?
No it changed automatically
If it is the WCH CH340, then why is it identifying itself with the 0403:6001 USB VID/PID pair of the FT232 chip:
instead of the 1A86:7523 VID/PID pair of the CH340?
So what will be the issue because the chip is working fine
I think it is something with the bootloader or cable or else the chip would have shown damage
The chip's driver is not available for win11 so that's why it is unable to connect
I have a board with a FTDI FT232RL chip and I did not have any issues to get it working in Win11. So a driver for the real chip is available under Win11; the driver might have been installed when you installed the IDE.
I have no idea how Windows will differentiate between a real FTDI FT232RL and a fake one but the fact that you state that there is no driver available might be caused by the fact that Windows knows that it's a fake FTDI FT232RL chip.
You should accept the fact that you have been sold a piece of crap and ask for a refund (as already indicated in post #22).
BTW
My specific board does not change ports at random.
Well I have checked on website and it's the same chip but with less pins and it's an smd package and it's original but it's unmarked
I have installed drivers and the other one from my friend which is also a clone with same chip it is working.I think it's something to do with bootloader of it. Today I went to local Shop from which I bought it, Shopkeeper said that there's no guarantee of it and he will not refund it because it's a Chinese one. All the Nanos there are Chinese make.
You mean that your friend's board works on your PC.
Board detection has nothing to do with bootloaders. But you can use his board to burn the bootloader.
Did they clearly state that on e.g. their website or on the invoice. In the countries that I know the shopkeeper would not get away with that unless clearly stated.
Something like ''I sell chinese crap and will not give any warranty on it".
It's possibly worth it to buy in future from a reputable dealer overseas. It might be more expensive but they usually work and there is a return/refund policy.
No bro I live in India and in my country you can sell non functional things too and you scam People,and yes from the next time I'll buy from Amazon or any reputed store or I will buy genuine boards from Arduino or Import them from U.S.A.
He said that It will work and no one has complained that the board is no longer working,but today when I went to his shop he said it's a Chinese version and it is sealed pack so he will not replace it and it's not his fault.