[sebadium]

29GL064 must be programmed before replacement.
K9F2G08 You can erase or solder a clean new

The fact that the update fails and the LEDs are lit in different colors during the update indicates a problem with the mega16. The fact that the recovery does not start with the button may have the cause of an error in the button chain up to mega16. Check the resistance on the board indicated in the photo, there were cases when it was absent and caused the button to work poorly.

i really apreciate the reply, last question please 29GL064 need to be programmed with what'¿

[sebadium]

why the puts this cables any body know?

[ferrum]

KIMZ
Apparently yes, you will have to replace 29GL064. You have taken too many erratic actions.
This chip must be programmed on a programmer such as RT809H or TNM5000 before soldering
I think there is a malfunction and until it is fixed you will not be able to make an update. Post a photo of the boards and maybe I will see some other errors known to me

SEBADIUM
This is the first time I see such art.

[BMWF750GS]

KIMZ
Apparently yes, you will have to replace 29GL064. You have taken too many erratic actions.
This chip must be programmed on a programmer such as RT809H or TNM5000 before soldering
I think there is a malfunction and until it is fixed you will not be able to make an update. Post a photo of the boards and maybe I will see some other errors known to me

SEBADIUM
This is the first time I see such art.

Hello, Mr. ferrum , I encountered an ICOM A2 clone, four red lights flashed once after powering on, I replaced S29GL064, now the system light flashes green, I checked the data, and there is no problem with the chip, ICOM A2 can enter the emergency mode, but it cannot be restored! What am I supposed to do? Best regards!

[ferrum]

What happens when you start recovery mode? After replacing 29gl064 k9f2g08 24c02. 1562 must be restored. If you do not start reading from a USB flash drive, the reason may be the lack of power on the USB or there is no connection 1562 with the processor.

[BMWF750GS]

What happens when you start recovery mode? After replacing 29gl064 k9f2g08 24c02. 1562 must be restored. If you do not start reading from a USB flash drive, the reason may be the lack of power on the USB or there is no connection 1562 with the processor.

When recovery mode is enabled, the four leds alternately flash red and remain so! How to recover1562? Thanks for your reply! Highest respect!

[ferrum]

not read from a flash drive, and there can be a lot of reasons. Check voltage supply on USB data line from USB to 1562. See initialization of 1562 on PCI bus. All these tips are for very skilled craftsmen and the simplest thing I can advise is to check if there is a break from USB to 1562

[BMWF750GS]

not  read from a flash drive, and there can be a lot of reasons. Check voltage supply on USB data line from USB to 1562. See initialization of 1562 on PCI bus. All these tips are for very skilled craftsmen and the simplest thing I can advise is to check if there is a break from USB to 1562

Thank you very much. I'll try and fix it!

[BMWF750GS]

not  read from a flash drive, and there can be a lot of reasons. Check voltage supply on USB data line from USB to 1562. See initialization of 1562 on PCI bus. All these tips are for very skilled craftsmen and the simplest thing I can advise is to check if there is a break from USB to 1562

Hello, Mr. ferrum.
I'm sorry to bother you again!
I checked all the operating conditions of 1562 today, 1.8V and 3.3V and  crystal oscillator are normal, and all the necessary operating conditions are met, but the voltage of USB is abnormal. I started the emergency mode, and USB also has no working voltage. I hope you can give me another hint!

[ferrum]

check:
the presence of a voltage of 5v.
Activation signal 1562 for 2025
Replacement often required 2025

ICOM will work even if you remove 1562 but for usb to work 1562 must be initialized on the bus PCI
after activation PCI, 1562 gives a signal for USB power supply