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MCU-PLUS-SDK-AM243X: Trying to flash the enet_cpsw_tcpserver example without success

Part Number: MCU-PLUS-SDK-AM243X
Other Parts Discussed in Thread: UNIFLASH

I'm trying to flash the enet_cpsw_tcpserver example to the AM243x Launchpad with the SBL OSPI bootloader, but the bootloader gets stuck when flashed.

I flashed using the UART bootmode with the command "python uart_uniflash.py -p COM7 --cfg=sbl_prebuilt\am243x-lp\default_sbl_ospi.cfg"

Everything in the .cfg file is according to the "Flash hello world example" here and it gets stuck on the following:

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DMSC Firmware Version 8.4.7--v08.04.07 (Jolly Jellyfi
DMSC Firmware revision 0x8
DMSC ABI revision 3.1
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Two questions about this:

1. Why is it getting stuck? I flashed the LED blink examples which ran without any problems, but with using peripherals like ENET and MCSPI the bootloader gets stuck.

2. The firmware version is at 8.4.7, while the examples state version 21.1.1--v2021.01a, where do I get this newer version.