Help for recovering USB drive with IS903 controller

[KdMK1973]

Hi Guys, I am trying to recover a 128GB memory USB-drive with a IS903 controller. The controller does not seem to work properly. the memory chip is labled "43010Y018946 128G" or "4301DY013346 128G" or something similar, but it appears to be relabeled.

Can anybody help in recoverring the data from the memory chip?

Thanks and best regards

kdMK1973

ChipGenius does say about the memory chip:
Description: [K:]USB-Massenspeichergerät(NAND Flash)
Device Type: Mass Storage Device
Protocal Version: USB 3.00
Current Speed: High Speed
Max Current: 304mA
USB Device ID: VID = 1F75 PID = 0903
Serial Number: 16110956000040
Device Name: USB DISK
Device Revision: 0001
Product Model: NAND Flash
Product Revision: 1.00
Controller Vendor: Innostor
Controller Part-Number: IS903-A4 - ??ROM??
Flash ID code: 453E87937E57 - SanDisk SDTNQFDMA-064G - 2CE/Single Channel [MLC-16K] -> Total Capacity = 128GB
Tools on web:
Possible Flash Part-Number
----------------------------
[1CE]SDTNQFDMA-064G x 2 pcs/Channel x 1 Channel
[1CE]SDTNQFDMA-064G x 2 pcs/Channel x 1 Channel
Flash ID mapping table
----------------------------
[Channel 0] [Channel 1]
453E87937E57 --------
453E87937E57 --------
-------- --------
-------- --------

[arvika]

Yes. Chip-off method should give good result for this controller.