use factory driver for smi
install factory driver
and after connect use smi mp tool

to re frimware it
good luck

why you open the flash cover?
your problem is software

also we haave not fw65v5050.bin
so wait until we get that firmware

first use factory driver

if cant see driive letter

connect gnd+led left side

read old Article

sandisk or Toshiba 19nm mlc downgraded
but soldering nand is unplugged

flash I'd error!
you see I'd is not normal
solder again nand pin
you have hardware problem!

note:
some time we can't see the drive letter
this mean flash firmware is crashed
so we closed nand data pins (29+30)
or do my way
after connect +5 volt to controller pin
nand I'd is changed to 04 04
but before do firmware
cut the wire
2250 2260_2261_2267_2268
and
SMI 3257 family work with my way

use wire and solder pin (I show in top picture)
after soldering wire connect to PC
if you see 2268 pram
cut the wire (but no disconnect flash)
download uptool ver2093
go setup
first in user interface
enabled clean button
after do that
in main menu click clean flash
to erase all the old bad firmware
second
after clean flash
firmware again
in settings flash memory
downgraded flash
low level
smart test
ecc 12

good luck

4200 is phison 2251-68
before connect to PC
hold 29+30 band pin
to get the ROM code mode
if you real old article get that
after see the drive you can
re firmware uptool 2093
and capacity mode
band is downgraded
2c mean to capacity mode

to day i fix 2207+a19 tlc toshiba

but to day just update ony isp And Dont clean nand in uptool

put this line in mp.ini

ISP ONLY=1

wite wire +5 volt
orange wire GND
blue pin is (eml3020 (pin 4 (out put 3.3)

in final

ic name is no matter ,you can use any ic (5v to 3.3)

first read the datashet
and may be ic pin is different
so READ THE DATA SHET and do that
good luck

find very old flash (some smi ) have 5 to 3.3 volt

ok so many people say cant find on smd market

how i find?

alex used flash extractor and tell me controler name and nand name \
example phison 2207 th58teg8t2jta20