H900-MT7621-v3.2.340 – October 2025

• Fixed issue that module 1 will drop when dialling module 2.
• Fixed issue that reboot one module, another module will reboot also.
• Fixed the non-robust code in SMS feature.

H900-MT7621-v3.2.339

• Added supported for slm770a.

H900-MT7621-v3.2.338

• Fixed issue that IP passthrough sometimes cannot work on rm520n.
• Supported dual em06 and rm500u+rm520n.

H900-MT7621-v3.2.337

• Added band lock option for rm500u.

H900-MT7621-v3.2.336

• Added IPv4v6 options on network–>mobile page for ep06.

H900-MT7621-v3.2.334 – June 2025

• Updated https certificate generate method,.

H900-MT7621-v3.2.333

• Fail-over feature triggers on signal strength status.

H900-MT7621-v3.2.332

• Added TCP server support,.
• Added GPS sync system time.
• Show GPS status on overview page.

H900-MT7621-v3.2.331 – April 2025

• Optimized dial process.
• Fixed issue that slm750 disconnects internet access every 21 hours when sms enabled.

H900-MT7621-v3.2.330

• Fixed PPTP server web GUI issue.

H900-MT7621-v3.2.329

• Added a monitor to check dhcp functionality.

H900-MT7621-v3.2.328

• Optimized mobile network dial process.

H900-MT7621-v3.2.327

• RM520N supports operator selection feature.

H900-MT7621-v3.2.326

• Fixed issue that l2tp server sometimes cannot add correct route for remote subnet.

H900-MT7621-v3.2.325 – December 2024

• Fixed issue Sierra Gobinet driver conflicts with Fibocom Gobinet driver.

H900-MT7621-v3.2.324

• Supported Fibocom modules.

H900-MT7621-v3.2.323 – October 2024

• Updated https cert files generate method, since the old way causes chrome refuses to access https web gui.
• Added option to enable saving system log and kernel log during reboot.

H900-MT7621-v3.2.321

• Fixed issue that 5g-nsa and 4g show signal strength 20 or 2.

H900-MT7621-v3.2.320

• Fixed issue that status routes cannot be deleted.

H900-MT7621-v3.2.319 – August 2024

• Optimized dial process.

H900-MT7621-v3.2.318

• Supported 2 modules h900-mt7621.

H900-MT7621-v3.2.317

• NtrIP added. the ntrIP sends the correction to serial port.
• Display gps coordinate on overview page.

H900-MT7621-v3.2.316

• Added oid for rm500q modem temperature.
• Added OID for VRRP status.

H900-MT7621-v3.2.315 – June 2024

• Removed UI Filebrowser page.
• Fixed several vulnerabilities of UI.

H900-MT7621-v3.2.314

• Added snmp oid for 5g rsrp,rsrq,sinr,.
• Added snmp oid for vrrp status.

H900-MT7621-v3.2.313 – June 2024

• Updated password generate algorithm.
• Added operator scanning for rm520/rm500q.

H900-MT7621-v3.2.312

• Added logic that if modem is not detected and icmp check is enabled, reboot router to get modem back.

H900-MT7621-v3.2.311

• Changed showing dns to IP in real time graphs connection page.

H900-MT7621-v3.2.310

• Added GPS status on overview page.
• Added GPS status gateway.
• Fixed issue that sim username/password has symbol $.

H900-MT7621-v3.2.309 – April 2024

• Fixed dio trigger sms issue.

H900-MT7621-v3.2.308

• Added bank lock for module rm520n-gl.

H900-MT7621-v3.2.307 – March 2024

• Fixed WIFI issue which introduced at v3.2.306.
• Added dio direction on web gui.

H900-MT7621-v3.2.306 – March 2024

• Updated nms for 5g.
• Fixed automatic apn issue.
• Fixed issue that modem may not dial after bootup.

H900-MT7621-v3.2.304

Added web gui to upload https certificate.

H900-MT7621-v3.2.303 – January 2024

• Save config files in flash as backup automatically.
• If config via uci command or edit files in SSH, it requires to run command “save_flash”.
• Removed flash backup and restore at page system–>back / restore.
• Force to change password, new password can be same as default.

H900-MT7621-V3.2.302

• Fixed issue that firewall was disabled, then power on router, then enable firewall from web gui failed.
• Updated chinese transfer.
• Supported module rm500u.

H900-MT7621-v3.2.301

• Fixed rm520,rm500qgl cannot switch sim in fake poe h900.

H900-MT7621-v3.2.300

• Fixed issue that IP passthru keep disconnected and reconnected.

H900-MT7621-v3.2.298

• Fixed captive portal local auth issue.

H900-MT7621-v3.2.296

• Updated new WEBUI.

H900-MT7621-v3.2.295

• Fixed load balancing issue that one interface not show up sometimes.

H900-MT7621-v3.2.294

• Added new option pdp context since some networks cannot dial up with pdp id 1.

H900-MT7621-v3.2.291 – September 2023

• Fixed issue that sometimes SSH account cannot be changed from web gui.
• Show 5g module signal per antenna on page status–>network–>mobile.

H900-MT7621-v3.2.290

• Fixed mobile network selection.
• Fixed ep06 dial issue.

H900-MT7621-v3.2.289

• Rm520n support inner sim siwtch and outer sim switch.

H900-MT7621-v3.2.288 – August 2023

• Fixed dynamic routing password issue.
• Upgrade dial tool qua_cm to v1.6.5.
• Upgrade rm500q driver to v1.6.5.
• Added feature to run customized scrIPt in /etc/config/scrIPt.custom.
• Supported single IP as reemote subnet in IPsec.

H900-MT7621-v3.2.286 – June 2023

• Added auto apn feature.

H900-MT7621-v3.2.285

• Fixed IPv6 address show on overview page.
• Added auto apn,username and password functionality.
• Fixed IPsec server restart tunenel periodically.
• Removed 100~199 on strength item of overview page.
• Removed logs of failover.

H900-MT7621-v3.2.284

• Fixed issue with 1 module 2sims when switch from master to backup.
• Added IPv6 support for rm500q srm825.

H900-MT7621-v3.2.282

• Added web gui to force changing default password for specific customers.

H900-MT7621-v3.2.281 – March 2023

• Changed text of webgui system–>password.
• Fixed an issue that may cause lan cannot resolve DNS.

H900-MT7621-v3.2.279

• Fixed web username/password issue for nms 2.7.

H900-MT7621-v3.2.278

• Added support for em05,slm720.
• EoIP server option supports dynamic dns.
• Added zerotier in VPN.

H900-MT7621-v3.2.277

• Fixed slm750 sometimes cannot receive sms after boot up.

H900-MT7621-v3.2.275 – December 2022

• Updated uboot for error light blink on h900 and h685-5g.
• Added new option reboot device if wifi not detected at wifi config page.

H900-MT7621-v3.2.269 

• Fixed overview page port status issue.
• Removed -32768 rsrp rsrq of 5g from overview page.
• Removed useless button unsaved change.

H900-MT7621-v3.2.268 – October 2022

• Added new oid in snmp to indicate cell interface up or down with integer.

H900-MT7621-v3.2.267

• Added options to disable http and SSH at page network–>firewall–>security.

H900-MT7621-v3.2.266

• Fixed snmp issue that cannot read mobile status.

H900-MT7621-v3.2.265

• Fixed issue that dhcp renew restart l2tp interface.
• After save lan & wan configuration it will not redirect to interfaces overview page again.

H900-MT7621-v3.2.264

• Fixed issue that cannot ping lo IP when IPsec config lo IP as local subnet.
• Added mschapv2 on l2tp server.
• Don’t restart l2tp when cell interface dhcp renew.

H900-MT7621-v3.2.263 – July 2022

• Fixed loopback ping issue.
• Fixed firewall security default value issue.

H900-MT7621-v3.2.261

• Removed option extra ‘-m policy –strict –dir in –pol IPsec –proto esp’ in firewall config file.
• Added source zone for dmz.

H900-MT7621-v3.2.260

• Changed way to remove connect track table when firewall reload.
  Save modem status in backup files.
• Config interval of save system log and kernel log at system–>system–>logging.
• Fixed signal led issue of 1 module 2 sims.

H900-MT7621-v3.2.259 

• Added igmpproxy at network–>igmp proxy.

H900-MT7621-v3.2.258

• Added feature to restore/backup config files in flash.
• Fixed issue that wrong 5g rsrq and sinr values of rm500q.
• Added option to disable sIP alg in firewall.

H900-MT7621-v3.2.257

• Optimized dial process.
• Added option in network–>mobile to turn off modem radio if disable mobile network.
• Added new option in nms to choose nms server version.
• Removed default route created by qualcomm connect manager.
• Optimized 1 module 2 sims switch time.

H900-MT7621-v3.2.256 – May 2022

• Added feature sending sms when router boot up.

H900-MT7621-v3.2.255

• Added option “sIP alg” at page firewall.

H900-MT7621-v3.2.254

Fixed vulnerability.

Added new option check_interval for l2tp client.

H900-MT7621-v3.2.253

• Fixed vulnerabilities.
• Added l2tp failover.
• Fixed h900 time sync issue.

H900-MT7621-v3.2.251

• Added operator user and it is disabled as default.
• Added enable password on dynamic routing feature.
• Optimized rm500q status fetch process.
• Fixed diagnostics issue.

H900-MT7621-v3.2.250

• Added config page custom rules at network–>firewall.

H900-MT7621-v3.2.249

• Fixed diagnostics page issue.
• Added watchdog for nms.

H900-MT7621-v3.2.247

• Upgrade quectel driver from 1.6.2.9 to 1.6.3 for 5g routers.
• Fixed slm750 r2.0 gps issue.

H900-MT7621-v3.2.245 – December 2022

• Fixed issue 1 module 2 sim, and sim 1 and sim2 choose different network type.
• Updated SSH tool dropbear from 2015 to 2019.

H900-MT7621-v3.2.244

• Supported of u9300c.
• Supported slm750 r2.0.
• Supported quectel em160, gobinet mode.
• Slm750 IPv6 and IP pass thru.

H900-MT7621-v3.2.243

• Optimized one module 2 sim dial process.
• Fixed issue that after reset , cell cannot dial up. this issue is introduced in v3.2.242.

H900-MT7621-v3.2.242 – November 2022

• Added netmask option at page network–>mobile.
• Added IPv6 support on h820qo 2sim version.
• Added mib oids IPsecstatustable and grestatustable.

H900-MT7621-v3.2.241

• Added sms gateway.
• Added hotspot.
• Added pppd support on module ep06 and ec25.
• Added sim8200-ea on h685f.

H900-MT7621-v.3.240

• Added support of module sim8200ea-5g.

H900-MT7621-v3.2.239

• Fixed issue that module cannot dial up sometimes.

H900-MT7621-v3.2.234

• • Updated openVPN from v2.3.6 to v2.4.7.

H900-MT7621-v3.2.233

• Fixed issue that rm500q cannot switch to sim2.

H900-MT7621-v3.2.232

• When gre tunnel set to only receive, it will ping remote peer automatically.
• Added mib option for wan,lan1,lan2, lan3, lan4 physical status.
• Added mib option for arp count.

H900-MT7621-v3.2.227 – May 2021

• Parse gps coordiante with new way, add new option sync router time from gps time.

H900-MT7621-v3.2.226

• Changed rm500q sim switch in router, not in module.

H900-MT7621-v3.2.225

• Added hide ssid option for h700 2.4ghz wifi.
• Added band lock for rm500q sa.
• Updated icmp check, add options “ping packet size” and “start ping after cell up”.

H900-MT7621-v3.2.224

• Added direction 1 on openVPN option tls_auth if tls_auth is enabled.
• Updated forge module cm tool to fix srm815 sa issue.

H900-MT7621-v3.2.223 – October 2021

• Added IPv6 support for module slm750.

H900-MT7621-v3.2.222

• Added srm815 sa network status support.
• Updated srm815 driver and cm tool for 5g sa.

H900-MT7621-v3.2.221

• Added rm500q sa network status support.
• Fixed issue that eoIP flapping.
• Fixed issue that snmp doesn’t have cell 2 status.