com port configuration - Touch Diamond2, Pure Q&A, Help & Troubleshooting

I am trying to connect an external com device (RC Altimeter) through the usb input socket. I receive the message "open com port failed" or "com port not found". How can I configure the com ports of the device ? Thank in advance for your answer.

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Can used Hub USB

can use Hub Usb For make flash By "enter usb Host Mode " instead of Y Cable " ?
I have that check my pic please
samilee1985 said:
can use Hub Usb For make flash By "enter usb Host Mode " instead of Y Cable " ?
I have that check my pic please
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No not possible conections inside are diferent

Tethering with CM11

My LG L90 D415 on CM11 will not tether. The hotspot works, but tethering does not. I connected via USB to a PC that has broadband internet from a cable modem. I ticked the USB tethering box. My PC searched windows update for the drivers, but only found 4 out of 5 drivers. The drivers it found are: USB Composite Device, LGE AndroidNet USB Modem #4, LGE AndroidNet USB Serial Port (COM9), and USB Input Device. The driver that failed was LGE AndroidNet NDIS Ethernet Adapter #2. I am running CyanogenMod version 11-20141201-UNOFFICIAL-W7. I'd really like to tether, would you please tell me how this can be done?
I am looking for the drivers for my PC to run the LG D415. I have CM11-20150216-NIGHTLY-w7. After I plug the phone into the computer. The only driver that fails is the driver for the modem.

LS991ZVD & LS991ZVF - NO USB serial port under Ports (com&lpt)

My both devices are connecting to PC-np. I can browse files - np. Download mode works fine with com & port number - np. LG Mobile tool identify my phones-np. I can see and select options for charging, mtp, and all - np. usb debugging is works good too. BUT BUT when I connect my device manager shows only G4, LG Air drive under portable devices and NO comport number or LGE Mobile USB serial Port COM - Nothing worked. I did installed almost all the drivers and uninstalled and tired as much I could. Nothing worked and no shows the port com in device manager. I have t mobile and shows just like that.. Any help, advice and guide will be appreciated. Thanks
jayalaba said:
My both devices are connecting to PC-np. I can browse files - np. Download mode works fine with com & port number - np. LG Mobile tool identify my phones-np. I can see and select options for charging, mtp, and all - np. usb debugging is works good too. BUT BUT when I connect my device manager shows only G4, LG Air drive under portable devices and NO comport number or LGE Mobile USB serial Port COM - Nothing worked. I did installed almost all the drivers and uninstalled and tired as much I could. Nothing worked and no shows the port com in device manager. I have t mobile and shows just like that.. Any help, advice and guide will be appreciated. Thanks
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You have to set in the hidden usb menu rndis modem. I cant remember how to get to it.

Mtp OTG doesn't work

Hi ! I don't know why but I want to connect my Pixel 4a 5G Yesterday on my mac and today on Pc the pixel is not recognized.
I have uncheck usb debuging and check it again but not working.
My Pixel are on last Android 12 and root with magisk. it is possible that a mode can create a problem with the OTG ?
I have test on Safe mod doesn't work too
I have connect an usb type c usb key it recognize.
I have test connect on plateform tools and on terminal ./adb devices, have message on pixel to allow my computer and it recognize but not Android File transfert ?
I think stay the new update and see if I can update it !?
I don't understand why ?
Thanks
Hi ! I post again because when I connect usb key mtp works and if I connect to my mac and go to settings usb parameters and choose transfert files/Android auto that work but never had notification pop-up for choose it
USB is a master/slave protocol. When you plug in an otg cable, your phone's USB controller switches into host mode. Your computer's USB is always in host mode. So your effectively trying to get two master devices to communicate which USB does not support.

A30 Unknown Device (Code 43) "File Transfer" PC NOT Detected [Custom Rom]

A30 Unknown Device (Code 43) "File Transfer" PC NOT Detected [Custom Rom]
Good morning experts of XDA,
I have encountered a very unusual problem which is not able to have my A30 detected via USB,
after flashing custom rom.
"Corvus_vS4.0-Leviathan-a30-Unofficial-2040"
"Eureka_Kernel_R10.1_A30"
"Magisk-v25.2 Rooted"
There is nothing wrong with the device hardware and cable,
for I have two same devices "Samsung A305F".
before I flashed my "first A30" device, everything seems to be working like usual, with the USB able to detect for file transfer on PC.
after doing root and everything functioning except for USB FILE TRANSFER.
When I plug in my USB cable. it prompt "USB DEVICE IS NOT RECOGNIZED".
I checked in Device Manager it says "Unknown Device" & "Windows has stopped this device because it has reported problems. (Code 43)" in properties.
Meanwhile, I connect my other A30 which is still stock rom is detectable, aswell as my other android devices.
What could be the problem and is there any solution?
I have tried installing Samsung USB Drivers. "Which is useless for my other devices in stock rom is detectable".
Still It wont detect and prompt as Unknown Device.
Solutions?

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