openwrt software was installed on my modem
I wanted to go back to the original software because there was no 5ghz support
I made a mistake somewhere and the modem is not responding. I cannot command the modem in any way
When I connect via serial port, I press any key but the boot does not stop.
last sentence on serial port screen
"Uncompressing ... LZMA: uncompress or overwrite error 1 - must RESET board to recovery
it does not allow me to enter any commands after this section. When I throw a file with u-boot.asc it does not respond.
I want to use my modem with its original software again.
I tried to recover with tftp server. but I was not successful.
When I put the device into uart mode, there is no reaction on the screen when you press the keys. however, the rx light flashes very neutrally on the usb ttl card.r however, the rx light flashes very neutrally on the usb ttl card.
review no response. Could there be a problem with my device's ttl connections?
I installed openwrt software on my modem with starjos java. so I didn't use serial port while installing openwrt. however, I connect to the device via serial port and put it into uart mode, I send the u-boot.asc file but it looks like the file is not gone. the device does not perform any operations on the serial port again.
I don't understand from your posts if the tx to the board works or not.
Note: Make sure it accepts user input by interrupting normal booting by pressing 't' on U-Boot loading. If it doesn't, try another software. (screen recommended)
Also have you shorted the pin as described in the installation section?
You need to keep a left side of R225 shorted to UART GND from boot to finishing of uploading the U-Boot image. A soldered cable will work, but an alligator clip connected to the GND on the UART and a small flathead screw driver or scissors pressed against the pad (shown in the image below) work as well, as long as you can hold them steady for about 30 seconds.
The cropped photo only shows a boot loop. And I asked you to copy-paste the text only in preformatted text.
Furthermore there doesn't seem to be a firmware partition in the table.
So follow the procedure as it is mentioned in the guide and post here the output of the console to help you with what went wrong.
my english is bad so i apologize.
I mean, my modem does not react to keyboard keys on the serial port screen and does not allow me to command.
so I ask how do I get back the deleted parts or how to reinstall software.
Your English is fine, don't worry about that. Just focus on what we ask you and don't do unnecessary things.
This could mean that the cable from the USB2TTL TX pin is not connected properly to the RX on the modem board.
There are also some hacks mentioned in the page with short circuiting ping Ground to R225. Make sure you follow them to the letter.
Worst case scenario is that the USB2TTL is malfunctioning or the board's serial connection has problem.