now i have a 2251-38 and 2(th58nvg6d2..)

i loking for Good Flash Board

in phison site say 2251-38,2251-33,2251-32 is pin to pin Compatible
also i have team group flash 2gb phison 2251-38 and some emmc nand 2gb

why team group used 4channel controller for 2GB .i cant undrstand
and pcb is un un usabled
becuase just emmc and dont have a tsop 48 pin
so i extract the controler from PCB

i have 2 «th58nvg6d2ela48» one from japan
one from taiwan
i make this 32gb for me .used 2team group 16 gb same nand
so ,real flash 128gb

must be 4 or 8ce
98 3c a5 93 4ce th58tft0dfkba4k
micron l95b
2c à4 e5 3c 4ce
lets show to you some real flash memory of my flash ,i alwayes make my flash .see the flash id ,and ce and channal
this is fake flash

frist 2 id is flash brand
ec samsund
98 toshiba
45 sandisk
ad hynix
b5 specteck
2c micron
89 intel

2nd id is flash size

d5 2g
d7 4g
de ,ce,88,64 =8g
3a ,4c,1a =is 16gb
3c =32 gb

and ce ,number of flash chip ,inside or out side of nand
your flash is 16gb

but downgraded flash
alcor mp show your real capacity is 8gb
picture have a good qouality to see if not
say to me to help you
also nand is real downgrade
8gb ad de =8gb
white capacity optimizie real 8gb
not 64gb
controler is no matter cob or 48pin
it is real alcor controller
this is a fake flash
we havent tools
for new sss
In setting mach your pid and bid
Change 058f to your flash vid 000
Alcor mp v15.09.15

Capacity optimize
Ecc 12
Full scan 1
Open flash cover
Connect band chip 29,30 pin or and+led left side
Read old article

If you can't?
Take good picture flash board
I will help you
your nand is downgraded try capacity mode ecc=12
Full name is just 292,sory dude cant find in marketing ,,or compunets shop ,this ic just for is902