T-Mobile 4G LTE CellSpot » History » Revision 2
Revision 1 (eloy, 11/30/2021 07:30 PM) → Revision 2/13 (eloy, 12/01/2021 10:43 PM)
h1. T-Mobile 4G LTE CellSpot _Any information that is and will be posted here is based on reverse engineering, without support from T-Mobile. Use at your own risk._ The T-Mobile/Nokia T-Mobile and Nokia branded version has been labled as the 4G LTE CellSpot V2 with the model "SS2FII Femtocell Multi-band SOHO". The Nokia-only branded version (pictured by the "FCC":https://fccid.io/H8NSS2FII) FCC) has been labeled with the model name "SOHO Small Cell V2 B2/B4". See the "Nokia quick guide":http://web.archive.org/web/20211201223549/https://data2.manualslib.com/pdf6/133/13212/1321196-nokia/b2.pdf?c77d329fcfca60ebf31fb2ad41fdcff4=&take=binary B2/B4" The device does not seem to support GSM, only UMTS and LTE. According to "pictures pictures of the internals by the FCC":https://cdn-0.fccid.io/png.php?id=3432311&page=5, FCC, the SoC is a Qualcomm FSM9955. FSM9955: https://cdn-0.fccid.io/png.php?id=3432311&page=5 This SoC incorporates a DSP by Qualcomm from the Hexagon series, see "here":http://pages.cs.wisc.edu/~danav/pubs/qcom/hexagon_micro2014_v6.pdf for more detailed information. series. There is a "Linux Linux kernel for the FSM99xx series":https://github.com/ipaccess/fsm99xx-kernel-sources series released, made with Yocto. Yocto https://github.com/ipaccess/fsm99xx-kernel-sources According to the "generic generic device tree include header":https://github.com/ipaccess/fsm99xx-kernel-sources/blob/master/arch/arm/boot/dts/qcom/fsm9900.dtsi, header, the FSM9900 series seems to be based on the 2012-era ARMv7 Qualcomm Krait cores. cores: https://github.com/ipaccess/fsm99xx-kernel-sources/blob/master/arch/arm/boot/dts/qcom/fsm9900.dtsi According to a "Reddit post":https://old.reddit.com/r/tmobile/comments/7ii5jm/4g_lte_cellspot_v2_virtual_teardown/ Reddit post the FSM9955 also uses a Krait core, but I don't have the kernel sources to confirm this. this: https://old.reddit.com/r/tmobile/comments/7ii5jm/4g_lte_cellspot_v2_virtual_teardown/ Maybe request more recent kernel sources from T-Mobile or Nokia. Links: * Paper about the Haxagon architecture: http://pages.cs.wisc.edu/~danav/pubs/qcom/hexagon_micro2014_v6.pdf * FCC page: https://fccid.io/H8NSS2FII
