MT7621 help

[Roy Walker]

I was attempting to put OpenWRT on a TP-Link Festa F61.  I messed up and
wiped out the u-boot image.  I am trying to build a new u-boot image and
ymodem it there.  Followed the exact steps here:
https://docs.u-boot.org/en/stable/board/mediatek/mt7621.html.

When it boots I get this and it hangs:

U-Boot 2025.07-00889-gbd0ade7d090a (Jul 22 2025 - 16:25:47 -0500)

CPU:   MediaTek MT7621A ver 1, eco 3
Boot:  DDR3, SPI-NOR 3-Byte Addr
Clock: CPU: 880MHz, DDR: 1200MT/s, Bus: 220MHz, XTAL: 40MHz
Model: MediaTek MT7621 RFB (SPI-NOR)
DRAM:

Is this a newer version of the MT7621 that is not compatible?  Maybe a
different DRAM binary is needed?  Here is a link with DMESG and boot logs -
https://forum.openwrt.org/t/support-for-tp-link-festa-f61-v1-6/236744/3.

TIA