You need to use a serial port utility that can be transferred using Xmodem and Ymodem. (Xmodem operates similarly to Ymodem; only Xmodem is shown here
Select Send Xmodem, then select the file you want to transfer, and click Send
When the transfer is complete, restart the device.
Original bl2 file:
after changing:
Afaik this depends on stock uboot right? Also flashing bl2/fip for current bootdevice is dangerous. Imho you should bootup one and flash another or you have high risk for brick. Also flash bl2 with common commands (e.g. load from usb and flash to offset) gives some practice if anything fails.
Seems that bl2 is downgraded in example…
