RaptorSDS

inside linux goto /boot open with nano or other editor armbianEnv.txt add the new line cpu-stability save and reboot

yes red are UART please use 3,3V on you ch341 adapter rx tx should be cross --> , tx form usb to rx from board , and rx from usb to tx from board , GND to GND you can not break anything with change of Baud rate , try both and you are fine the text that run automaticlly on UART is the serial log , when nothing or only some unreadable thing is show in putty please change baudrate than copy the text from putty or other tool and post here for jock , also ANdroid will produce a log on UART ( with some diffirence) many of this serial log also in android terminal demsg log i dont know the usb port order , for multitool over USB the port is normally irrelevant ,some box need normal USB , some the USB otg , some box hasnt the usb otg

Hi N3O i think there a missunderstanding both are right it depends on what you want the real first boot loader talk at 1.5M than the UART get change by the bootloader from NAND or SD card or android to 115200 you only need to UART -> UART-USB-> USB of windowsPC or linux and a tool like Putty or Kitty you dont need connect UART back to box or male male cable for normal Logs the male male cable only for hard flash new bootloader or recovery with another PC with a rockchip tool

last picture right below corner 8 or B JG22 .....MW or NW.... . chip please google that this should be the flash memory

hi eMCP is RAM and Flash on one Chip most time , --> when you have only one big chip beside the CPU NAND and eMMC is more tricky but its look the first picture , with the not solder Area ist the place for NAND ( often the NAND ships have many pins on both oposide ends) to be really sure please look at the big ship below the AMS1117 power regulator some hint the 4 smaller chip are the RAM (on top and below board)

@fangis do yo have link for a manual / instruction for install JWM or Openbox+tint2 i have not much experience when the desktop not already preinstall and preconfig at startup last time i install desktop without preinstall ( Dietpi and xfce ) all text and all symbol where missing . Thats was not a good experiance .

i have only a datasheet of later S9082 , maybe with some google you could also find S9012 . RTL8723BS should be easy finding . Most of this addon bords have same layout only some pins like EN (enable) my be variate in the beavior but not position good price on ali ( at my time is was 10€ without shipping only by a coupon it was affordable (around 3€ inklude shipping) User-Manual-3209392.pdf

thats a clone of realtek with name S9012P , i had also a box with a similar clone . Its close source and the Manufacture has no real linux driver my solution was reflow/resolder a realtek RTL8723 DS/BS from ali... its pin and pin behavior compatible , but without a proper driver the AP S9012P is useless in linux

@Max Sterg but i could be more stupid like picture of handymenny , when china store also fake the print o chip ( when thats true )

I would say EMCP because on left ro right i see wifi chip ; empty Memory chip space ; the Rk322x ;one Memory chip thats only one memory chip on upper right corner that maybe EMCP (combined RAM and ROM chip) please look at this chip and google it

@Max Sterg there are two ways first way : put the linux image as compress file on the multitool or secound way: first boot multitool , than the partionion get resize to around 2 till 4 gig and than put the compress or unzip files on the multitool @chakatun i got something similar when i start armbian with nand option from rk322x-config tool --> than initram did not know where to start from but i have nand space or maybe you have one of the new emcp memory (RAM and ROM on same chip) than its difficult to boot from internal space

@jock @Max Sterg thats correct the first time the image only occupied some GigaByte , after first run is enlarge . But you you can also put , after burn the sd card , the images as a compressed file on it (tar.zx or something like that) the multitool can decompress this file on the fly ( at the moment this tool burn the image to the box) the one gig is enough for that desktop image