@jyijyi I tied putting running swiflash -m wp7xx -I WP77xx_Release14.1_GENERIC_GCF_PTCRB.spk on the new module which didn’t work.
I confirmed the memory is different between the W7702 with R14.1 and the WP7702 with R15.1
The WP7702, SKU 1104214 has the following
AT!BSINFO
Product: WP7702
Revision: 40
Main: MDM9206 (000)
Radio: WTR2965
Power: PMD9607 (002)
Flash: MT29F4G08ABBEA3W 512MB x8 (44/0/0) (2048 blocks of 64 pages/block 4096B page size)