The procedure described there just does not work.
1997 sudo tar xfv GFX_5.01.01.02_es8.x.tar.gz -C /
1998 cd /opt/gfxinstall/
1999 sudo ./sgx-install.sh
2000 sudo reboot
2001 lsmod | grep omaplfb
lsmod
fb_ili9341 3507 0
snd_soc_simple_card 8529 0
uio_pruss 4309 0
tilcdc 28087 0
snd_soc_davinci_mcasp 16406 0
snd_soc_edma 1482 1 snd_soc_davinci_mcasp
snd_soc_omap 3677 1 snd_soc_davinci_mcasp
snd_soc_core 157988 4 snd_soc_davinci_mcasp,snd_soc_edma,snd_soc_omap,snd_soc_simple_card
snd_pcm_dmaengine 5401 2 snd_soc_core,snd_soc_omap
snd_pcm 81882 4 snd_soc_davinci_mcasp,snd_soc_core,snd_soc_omap,snd_pcm_dmaengine
snd_timer 19405 1 snd_pcm
snd 60280 3 snd_soc_core,snd_timer,snd_pcm
soundcore 7620 1 snd
evdev 11092 1
tda998x 11320 0
fbtft_device 39334 0
8021q 18957 0
garp 6435 1 8021q
mrp 7739 1 8021q
stp 2280 1 garp
llc 5497 2 stp,garp
usb_f_mass_storage 42605 2
usb_f_acm 7513 2
u_serial 11100 3 usb_f_acm
usb_f_ecm 9870 2
usb_f_rndis 22809 4
u_ether 12271 2 usb_f_ecm,usb_f_rndis
uio_pdrv_genirq 3981 0
uio 9016 2 uio_pruss,uio_pdrv_genirq
libcomposite 43976 18 usb_f_acm,usb_f_ecm,usb_f_rndis,usb_f_mass_storage
iptable_nat 2125 0
nf_conntrack_ipv4 14832 1
nf_defrag_ipv4 1786 1 nf_conntrack_ipv4
nf_nat_ipv4 5648 1 iptable_nat
nf_nat 15453 1 nf_nat_ipv4
nf_conntrack 113181 3 nf_nat,nf_nat_ipv4,nf_conntrack_ipv4
iptable_mangle 1849 0
iptable_filter 1914 0
spidev 7865 0
tieqep 9123 0
flexfb 13314 0
fbtft 32491 3 fb_ili9341,flexfb,fbtft_device
ip_tables 12312 3 iptable_filter,iptable_mangle,iptable_nat
x_tables 17737 3 ip_tables,iptable_filter,iptable_mangle
hid_cp2112 14545 8
debian@beaglebone:~$ eglinfo
Unable to initialise egl
egl error 'EGL_BAD_ALLOC' (0x3003)
debian@beaglebone:~$
other info
debian@beaglebone:/sys/class/drm/card0/card0-HDMI-A-1$ cat modes
1280x1024
1280x800
1152x864
1280x720
1280x720
1280x720
1024x768
1024x768
800x600
800x600
720x576
720x480
720x480
640x480
640x480
640x480
720x400
debian@beaglebone:/sys/class/drm/card0/card0-HDMI-A-1$ fbset
mode "1280x1024"
geometry 1280 1024 1280 3072 16
timings 0 0 0 0 0 0 0
accel true
rgba 5/11,6/5,5/0,0/0
endmode
debian@beaglebone:/sys/class/drm/card0/card0-HDMI-A-1$ eglinfo
Unable to initialise egl
egl error 'EGL_BAD_ALLOC' (0x3003)
debian@beaglebone:/sys/class/drm/card0/card0-HDMI-A-1$ glxgears
Error: couldn't open display :0
debian@beaglebone:/sys/class/drm/card0/card0-HDMI-A-1$